From b0f166542dae8e74f8837ad8968d8f234b3af630 Mon Sep 17 00:00:00 2001
From: Andrei Vorobev <andrei.vorobev@devexpress.com>
Date: Wed, 27 May 2026 14:40:38 +0300
Subject: [PATCH 1/3] ColorBox: remove m prefix and fix some more type and
 eslint errors

---
 packages/devextreme/js/__internal/m_color.ts  | 28 ++++++-
 .../{m_color_box.ts => color_box.ts}          | 16 ++--
 .../{m_color_view.ts => color_view.ts}        | 80 +++++++++++--------
 .../ui/html_editor/modules/m_toolbar.ts       |  2 +-
 packages/devextreme/js/ui/color_box.js        |  2 +-
 .../devextreme/js/ui/color_box/color_view.js  |  2 +-
 .../colorBox.markup.tests.js                  |  2 +-
 .../colorBox.tests.js                         |  2 +-
 .../colorView.markup.tests.js                 |  2 +-
 .../colorView.tests.js                        |  2 +-
 .../htmlEditorParts/toolbarModule.tests.js    |  2 +-
 11 files changed, 92 insertions(+), 48 deletions(-)
 rename packages/devextreme/js/__internal/ui/color_box/{m_color_box.ts => color_box.ts} (97%)
 rename packages/devextreme/js/__internal/ui/color_box/{m_color_view.ts => color_view.ts} (93%)

diff --git a/packages/devextreme/js/__internal/m_color.ts b/packages/devextreme/js/__internal/m_color.ts
index 9b9096fb6126..f0e91f5d5129 100644
--- a/packages/devextreme/js/__internal/m_color.ts
+++ b/packages/devextreme/js/__internal/m_color.ts
@@ -259,6 +259,27 @@ const standardColorTypes = [
 // eslint-disable-next-line @typescript-eslint/naming-convention
 const _round = Math.round;
 
+export interface ColorInstance {
+  baseColor: string | undefined;
+  r: number;
+  g: number;
+  b: number;
+  a: number;
+  hsv: { h: number; s: number; v: number };
+  hsl: { h: number; s: number; l: number };
+  colorIsInvalid: boolean;
+  highlight: (step?: number) => string;
+  darken: (step?: number) => string;
+  alter: (step: number) => ColorInstance;
+  blend: (blendColor: ColorInstance | string, opacity: number) => ColorInstance;
+  toHex: () => string;
+  getPureColor: () => ColorInstance;
+  isValidHex: (hex: string) => boolean;
+  isValidRGB: (r: number, g: number, b: number) => boolean;
+  isValidAlpha: (a: number) => boolean;
+  fromHSL: (hsl: { h: number; s: number; l: number }) => ColorInstance;
+}
+
 function Color(value?) {
   this.baseColor = value;
   let color;
@@ -580,4 +601,9 @@ Color.prototype = {
   },
 };
 
-export default Color;
+interface ColorConstructor {
+  prototype: ColorInstance;
+  new(value?: string): ColorInstance;
+}
+
+export default Color as unknown as ColorConstructor;
diff --git a/packages/devextreme/js/__internal/ui/color_box/m_color_box.ts b/packages/devextreme/js/__internal/ui/color_box/color_box.ts
similarity index 97%
rename from packages/devextreme/js/__internal/ui/color_box/m_color_box.ts
rename to packages/devextreme/js/__internal/ui/color_box/color_box.ts
index 08deb3051979..51b5f6cb6571 100644
--- a/packages/devextreme/js/__internal/ui/color_box/m_color_box.ts
+++ b/packages/devextreme/js/__internal/ui/color_box/color_box.ts
@@ -10,8 +10,8 @@ import type { ValueChangedEvent } from '@ts/ui/editor/editor';
 
 import type { PopupProperties } from '../popup/m_popup';
 import type Popup from '../popup/m_popup';
-import type { ColorViewProperties } from './m_color_view';
-import ColorView from './m_color_view';
+import type { ColorViewProperties } from './color_view';
+import ColorView from './color_view';
 
 const COLOR_BOX_CLASS = 'dx-colorbox';
 const COLOR_BOX_INPUT_CLASS = `${COLOR_BOX_CLASS}-input`;
@@ -281,7 +281,8 @@ class ColorBox extends DropDownEditor<ColorBoxProperties> {
     super._cancelButtonHandler();
   }
 
-  // needed to be typed in widget.ts
+  // need to be typed in widget.ts
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
   _getKeyboardListeners(): any[] {
     return super._getKeyboardListeners().concat([this._colorView]);
   }
@@ -303,7 +304,7 @@ class ColorBox extends DropDownEditor<ColorBoxProperties> {
   }
 
   _renderNoColorIcon(): void {
-    if (!this._$noColorIcon || !this._$noColorIcon.length) {
+    if (!this._$noColorIcon?.length) {
       this._$noColorIcon = $('<i>')
         .addClass(`${DX_ICON_CLASS} ${DX_ICON_COLOR_DISMISS}`)
         .appendTo(this._$colorResultPreview);
@@ -316,7 +317,7 @@ class ColorBox extends DropDownEditor<ColorBoxProperties> {
 
     this._$colorBoxInputContainer.toggleClass(COLOR_BOX_COLOR_IS_NOT_DEFINED, !hasValue);
 
-    if (hasValue) {
+    if (value !== null && value !== undefined) {
       this._cleanNoColorIcon();
 
       colorUtils.makeTransparentBackground(this._$colorResultPreview, value);
@@ -394,7 +395,6 @@ class ColorBox extends DropDownEditor<ColorBoxProperties> {
     return value;
   }
 
-  // eslint-disable-next-line class-methods-use-this
   _shouldLogFieldTemplateDeprecationWarning(): boolean {
     return true;
   }
@@ -435,7 +435,9 @@ class ColorBox extends DropDownEditor<ColorBoxProperties> {
       case 'applyButtonText':
       case 'cancelButtonText':
         super._optionChanged(args);
-        this._popup && this._addPopupBottomClasses();
+        if (this._popup) {
+          this._addPopupBottomClasses();
+        }
         break;
       case 'editAlphaChannel':
       case 'keyStep':
diff --git a/packages/devextreme/js/__internal/ui/color_box/m_color_view.ts b/packages/devextreme/js/__internal/ui/color_box/color_view.ts
similarity index 93%
rename from packages/devextreme/js/__internal/ui/color_box/m_color_view.ts
rename to packages/devextreme/js/__internal/ui/color_box/color_view.ts
index d716557dd2cc..84ac77dada6e 100644
--- a/packages/devextreme/js/__internal/ui/color_box/m_color_view.ts
+++ b/packages/devextreme/js/__internal/ui/color_box/color_view.ts
@@ -10,11 +10,11 @@ import { Guid } from '@ts/core/m_guid';
 import { extend } from '@ts/core/utils/m_extend';
 import { getHeight, getOuterHeight, getWidth } from '@ts/core/utils/m_size';
 import type { OptionChanged } from '@ts/core/widget/types';
-import type { SupportedKeys } from '@ts/core/widget/widget';
+import type { SupportedKeyHandler, SupportedKeys } from '@ts/core/widget/widget';
 import eventsEngine from '@ts/events/core/m_events_engine';
 import { name as clickEventName } from '@ts/events/m_click';
 import { isCommandKeyPressed } from '@ts/events/utils/index';
-import Color from '@ts/m_color';
+import Color, { type ColorInstance } from '@ts/m_color';
 import Draggable from '@ts/m_draggable';
 import type { EditorProperties, ValueChangedEvent } from '@ts/ui/editor/editor';
 import Editor from '@ts/ui/editor/editor';
@@ -85,6 +85,23 @@ export interface ColorViewProperties extends EditorProperties {
   target?: string | Element | dxElementWrapper | null;
 }
 
+type EditorWithLabelType = new (
+  element: dxElementWrapper,
+  options?: object,
+) => { registerKeyHandler: (key: string, handler: SupportedKeyHandler) => void };
+
+interface EditorWithLabelOptions {
+  editorType: EditorWithLabelType;
+  value: number | string;
+  onValueChanged: (args: ValueChangedEvent) => void;
+  labelText: string;
+  labelAriaText: string;
+  labelClass: string;
+  min?: number;
+  max?: number;
+  step?: number;
+}
+
 class ColorView extends Editor<ColorViewProperties> {
   _$palette!: dxElementWrapper;
 
@@ -100,8 +117,7 @@ class ColorView extends Editor<ColorViewProperties> {
 
   _updateByDrag?: boolean;
 
-  // need typings and correct class in m_color.ts
-  _currentColor!: any;
+  _currentColor!: ColorInstance;
 
   _isTopColorHue?: boolean;
 
@@ -401,20 +417,16 @@ class ColorView extends Editor<ColorViewProperties> {
     this._renderAlphaChannelElements();
   }
 
-  _makeTransparentBackground($el: dxElementWrapper, color: any): void {
-    if (!(color instanceof Color)) {
-      color = new Color(color);
-    }
+  _makeTransparentBackground($el: dxElementWrapper, color: string | ColorInstance): void {
+    const colorInstance = color instanceof Color ? color : new Color(color);
 
-    $el.css('backgroundColor', this._makeRgba(color));
+    $el.css('backgroundColor', this._makeRgba(colorInstance));
   }
 
-  _makeRgba(color: any): string {
-    if (!(color instanceof Color)) {
-      color = new Color(color);
-    }
+  _makeRgba(color: string | ColorInstance): string {
+    const colorInstance = color instanceof Color ? color : new Color(color);
 
-    return `rgba(${[color.r, color.g, color.b, color.a].join(', ')})`;
+    return `rgba(${[colorInstance.r, colorInstance.g, colorInstance.b, colorInstance.a].join(', ')})`;
   }
 
   _renderColorPickerContainer(): void {
@@ -438,15 +450,12 @@ class ColorView extends Editor<ColorViewProperties> {
     if (delta < 0) {
       delta = Math.abs(delta);
       const rows: dxElementWrapper[] = [];
-      let i;
-      for (i = 0; i < delta; i++) {
+      for (let i = 0; i < delta; i += 1) {
         rows.push($('<div>').addClass(COLOR_VIEW_ROW_CLASS));
       }
 
       if (renderedRowsCount) {
-        for (i = 0; i < rows.length; i++) {
-          $renderedRows.eq(0).after(rows[i]);
-        }
+        rows.forEach((row) => { $renderedRows.eq(0).after(row); });
       } else {
         this._$colorPickerContainer.append(rows);
       }
@@ -539,12 +548,12 @@ class ColorView extends Editor<ColorViewProperties> {
 
   _calculateColorValue(paletteHandlePosition: PaletteHandlePosition): number {
     const value = Math.floor(paletteHandlePosition.top + this._paletteHandleHeight / 2);
-    return 100 - Math.round(value * 100 / this._paletteHeight);
+    return 100 - Math.round((value * 100) / this._paletteHeight);
   }
 
   _calculateColorSaturation(paletteHandlePosition: PaletteHandlePosition): number {
     const saturation = Math.floor(paletteHandlePosition.left + this._paletteHandleWidth / 2);
-    return Math.round(saturation * 100 / this._paletteWidth);
+    return Math.round((saturation * 100) / this._paletteWidth);
   }
 
   _updateColorFromHsv(hue: number, saturation: number, value: number): void {
@@ -603,7 +612,7 @@ class ColorView extends Editor<ColorViewProperties> {
   _placeHueScaleHandle(): void {
     const hueScaleHeight = this._hueScaleWrapperHeight;
     const handleHeight = this._hueScaleHandleHeight;
-    let top = (hueScaleHeight - handleHeight) * (360 - this._currentColor.hsv.h) / 360;
+    let top = ((hueScaleHeight - handleHeight) * (360 - this._currentColor.hsv.h)) / 360;
 
     if (hueScaleHeight < top + handleHeight) {
       top = hueScaleHeight - handleHeight;
@@ -662,7 +671,7 @@ class ColorView extends Editor<ColorViewProperties> {
     this._$currentColor = $('<div>').addClass([COLOR_VIEW_COLOR_PREVIEW, COLOR_VIEW_COLOR_PREVIEW_COLOR_NEW].join(' '));
     this._$baseColor = $('<div>').addClass([COLOR_VIEW_COLOR_PREVIEW, COLOR_VIEW_COLOR_PREVIEW_COLOR_CURRENT].join(' '));
 
-    this._makeTransparentBackground(this._$baseColor, matchValue);
+    this._makeTransparentBackground(this._$baseColor, matchValue ?? '');
     this._makeTransparentBackground(this._$currentColor, this._currentColor);
 
     $colorsPreviewContainerInner.append([this._$baseColor, this._$currentColor]);
@@ -718,7 +727,7 @@ class ColorView extends Editor<ColorViewProperties> {
     ];
   }
 
-  _renderEditorWithLabel(options): dxElementWrapper {
+  _renderEditorWithLabel(options: EditorWithLabelOptions): dxElementWrapper {
     const $editor = $('<div>');
     const $label = $('<label>')
       .addClass(options.labelClass)
@@ -747,7 +756,7 @@ class ColorView extends Editor<ColorViewProperties> {
       editorOptions.step = options.step || 1;
     }
 
-    const editor = new EditorConstructor($editor, editorOptions);
+    const editor = new (EditorConstructor)($editor, editorOptions);
 
     editor.registerKeyHandler('enter', (e) => {
       this._fireEnterKeyPressed(e);
@@ -758,7 +767,7 @@ class ColorView extends Editor<ColorViewProperties> {
     return $label;
   }
 
-  hexInputOptions() {
+  hexInputOptions(): EditorWithLabelOptions {
     return {
       editorType: TextBox,
       value: this._currentColor.toHex().replace('#', ''),
@@ -829,7 +838,9 @@ class ColorView extends Editor<ColorViewProperties> {
       onValueChanged: (args) => {
         let { value } = args;
         value = this._currentColor.isValidAlpha(value) ? value : this._currentColor.a;
-        args.event && this._saveValueChangeEvent(args.event);
+        if (args.event) {
+          this._saveValueChangeEvent(args.event);
+        }
         this._updateColorTransparency(value);
         this._placeAlphaChannelHandle();
       },
@@ -860,7 +871,8 @@ class ColorView extends Editor<ColorViewProperties> {
       onDragMove: ({ event }) => {
         this._updateByDrag = true;
         const $alphaChannelHandle = this._$alphaChannelHandle;
-        const alphaChannelHandlePosition = locate($alphaChannelHandle).left + this._alphaChannelHandleWidth / 2;
+        const alphaChannelHandlePosition = locate($alphaChannelHandle).left
+          + this._alphaChannelHandleWidth / 2;
         this._saveValueChangeEvent(event);
         this._calculateColorTransparencyByScaleWidth(alphaChannelHandlePosition);
       },
@@ -934,7 +946,7 @@ class ColorView extends Editor<ColorViewProperties> {
   }
 
   _updateColor(isHex: boolean, args: ValueChangedEvent): void {
-    let rgba;
+    let rgba:number[] = [];
     let newColor = '';
 
     if (isHex) {
@@ -942,7 +954,9 @@ class ColorView extends Editor<ColorViewProperties> {
     } else {
       rgba = this._validateRgb();
       if (this._alphaChannelInput) {
-        rgba.push(this._alphaChannelInput.option('value'));
+        const { value } = this._alphaChannelInput.option();
+        rgba.push(value !== undefined && this._currentColor.isValidAlpha(value)
+          ? value : this._currentColor.a);
         newColor = `rgba(${rgba.join(', ')})`;
       } else {
         newColor = `rgb(${rgba.join(', ')})`;
@@ -958,7 +972,7 @@ class ColorView extends Editor<ColorViewProperties> {
   }
 
   _validateHex(hex: string): string {
-    return this._currentColor.isValidHex(hex) ? hex : this._currentColor.toHex() as string;
+    return this._currentColor.isValidHex(hex) ? hex : this._currentColor.toHex();
   }
 
   _validateRgb(): number[] {
@@ -966,7 +980,9 @@ class ColorView extends Editor<ColorViewProperties> {
     let { value: g } = this._rgbInputs[1].option();
     let { value: b } = this._rgbInputs[2].option();
 
-    if (!this._currentColor.isValidRGB(r, g, b)) {
+    const isInvalidRgb = r === undefined || g === undefined || b === undefined
+      || !this._currentColor.isValidRGB(r, g, b);
+    if (isInvalidRgb) {
       r = this._currentColor.r;
       g = this._currentColor.g;
       b = this._currentColor.b;
diff --git a/packages/devextreme/js/__internal/ui/html_editor/modules/m_toolbar.ts b/packages/devextreme/js/__internal/ui/html_editor/modules/m_toolbar.ts
index 0647c4f58e5c..afc71c31e703 100644
--- a/packages/devextreme/js/__internal/ui/html_editor/modules/m_toolbar.ts
+++ b/packages/devextreme/js/__internal/ui/html_editor/modules/m_toolbar.ts
@@ -1,5 +1,5 @@
 import '@js/ui/select_box';
-import '@ts/ui/color_box/m_color_view';
+import '@ts/ui/color_box/color_view';
 import '@js/ui/number_box';
 import '@js/ui/menu';
 
diff --git a/packages/devextreme/js/ui/color_box.js b/packages/devextreme/js/ui/color_box.js
index 7244e9f18e42..34fcfe6ce04b 100644
--- a/packages/devextreme/js/ui/color_box.js
+++ b/packages/devextreme/js/ui/color_box.js
@@ -1,4 +1,4 @@
-import ColorBox from '../__internal/ui/color_box/m_color_box';
+import ColorBox from '../__internal/ui/color_box/color_box';
 export default ColorBox;
 
 // STYLE colorBox
diff --git a/packages/devextreme/js/ui/color_box/color_view.js b/packages/devextreme/js/ui/color_box/color_view.js
index fc32021b2970..18a16bd2e3bd 100644
--- a/packages/devextreme/js/ui/color_box/color_view.js
+++ b/packages/devextreme/js/ui/color_box/color_view.js
@@ -1,3 +1,3 @@
-import ColorView from '../../__internal/ui/color_box/m_color_view';
+import ColorView from '../../__internal/ui/color_box/color_view';
 
 export default ColorView;
diff --git a/packages/devextreme/testing/tests/DevExpress.ui.widgets.editors/colorBox.markup.tests.js b/packages/devextreme/testing/tests/DevExpress.ui.widgets.editors/colorBox.markup.tests.js
index d95cc8f98d41..cefcca6d0e7f 100644
--- a/packages/devextreme/testing/tests/DevExpress.ui.widgets.editors/colorBox.markup.tests.js
+++ b/packages/devextreme/testing/tests/DevExpress.ui.widgets.editors/colorBox.markup.tests.js
@@ -6,7 +6,7 @@ import 'ui/color_box';
 import {
     DX_ICON_CLASS,
     DX_ICON_COLOR_DISMISS
-} from '__internal/ui/color_box/m_color_box';
+} from '__internal/ui/color_box/color_box';
 
 QUnit.testStart(function() {
     const markup =
diff --git a/packages/devextreme/testing/tests/DevExpress.ui.widgets.editors/colorBox.tests.js b/packages/devextreme/testing/tests/DevExpress.ui.widgets.editors/colorBox.tests.js
index 3e1e66f44f30..0e83969f492b 100644
--- a/packages/devextreme/testing/tests/DevExpress.ui.widgets.editors/colorBox.tests.js
+++ b/packages/devextreme/testing/tests/DevExpress.ui.widgets.editors/colorBox.tests.js
@@ -9,7 +9,7 @@ import { normalizeKeyName } from 'common/core/events/utils/index';
 import {
     DX_ICON_CLASS,
     DX_ICON_COLOR_DISMISS
-} from '__internal/ui/color_box/m_color_box';
+} from '__internal/ui/color_box/color_box';
 
 
 import 'fluent_blue_light.css!';
diff --git a/packages/devextreme/testing/tests/DevExpress.ui.widgets.editors/colorView.markup.tests.js b/packages/devextreme/testing/tests/DevExpress.ui.widgets.editors/colorView.markup.tests.js
index b1c5da30188d..49520b957dcb 100644
--- a/packages/devextreme/testing/tests/DevExpress.ui.widgets.editors/colorView.markup.tests.js
+++ b/packages/devextreme/testing/tests/DevExpress.ui.widgets.editors/colorView.markup.tests.js
@@ -1,7 +1,7 @@
 import $ from 'jquery';
 import fx from 'common/core/animation/fx';
 
-import '__internal/ui/color_box/m_color_view';
+import '__internal/ui/color_box/color_view';
 
 QUnit.testStart(function() {
     const markup =
diff --git a/packages/devextreme/testing/tests/DevExpress.ui.widgets.editors/colorView.tests.js b/packages/devextreme/testing/tests/DevExpress.ui.widgets.editors/colorView.tests.js
index e27eb88d9519..703d27a948fb 100644
--- a/packages/devextreme/testing/tests/DevExpress.ui.widgets.editors/colorView.tests.js
+++ b/packages/devextreme/testing/tests/DevExpress.ui.widgets.editors/colorView.tests.js
@@ -7,7 +7,7 @@ import fx from 'common/core/animation/fx';
 import { normalizeKeyName } from 'common/core/events/utils/index';
 
 import 'fluent_blue_light.css!';
-import '__internal/ui/color_box/m_color_view';
+import '__internal/ui/color_box/color_view';
 
 const TEXTEDITOR_INPUT_SELECTOR = '.dx-texteditor-input';
 const COLORVIEW_PALETTE_SELECTOR = '.dx-colorview-palette';
diff --git a/packages/devextreme/testing/tests/DevExpress.ui.widgets.htmlEditor/htmlEditorParts/toolbarModule.tests.js b/packages/devextreme/testing/tests/DevExpress.ui.widgets.htmlEditor/htmlEditorParts/toolbarModule.tests.js
index 4c7d92409628..a62b74b89215 100644
--- a/packages/devextreme/testing/tests/DevExpress.ui.widgets.htmlEditor/htmlEditorParts/toolbarModule.tests.js
+++ b/packages/devextreme/testing/tests/DevExpress.ui.widgets.htmlEditor/htmlEditorParts/toolbarModule.tests.js
@@ -3,7 +3,7 @@ import $ from 'jquery';
 import 'fluent_blue_light.css!';
 
 import 'ui/select_box';
-import '__internal/ui/color_box/m_color_view';
+import '__internal/ui/color_box/color_view';
 import 'ui/drop_down_button';
 
 import Toolbar from '__internal/ui/html_editor/modules/m_toolbar';

From 19fefeb21caf1e6390a4a58477ef1d20c9beb5ce Mon Sep 17 00:00:00 2001
From: Andrei Vorobev <andrei.vorobev@devexpress.com>
Date: Wed, 27 May 2026 17:07:59 +0300
Subject: [PATCH 2/3] ColorBox: PR comments fix

---
 packages/devextreme/js/__internal/m_color.ts  |  6 ++--
 .../js/__internal/ui/color_box/color_box.ts   | 17 ++++++-----
 .../js/__internal/ui/color_box/color_view.ts  | 29 +++++++++----------
 3 files changed, 26 insertions(+), 26 deletions(-)

diff --git a/packages/devextreme/js/__internal/m_color.ts b/packages/devextreme/js/__internal/m_color.ts
index f0e91f5d5129..eed05fea3f1c 100644
--- a/packages/devextreme/js/__internal/m_color.ts
+++ b/packages/devextreme/js/__internal/m_color.ts
@@ -275,7 +275,7 @@ export interface ColorInstance {
   toHex: () => string;
   getPureColor: () => ColorInstance;
   isValidHex: (hex: string) => boolean;
-  isValidRGB: (r: number, g: number, b: number) => boolean;
+  isValidRGB: (r: number | undefined, g: number | undefined, b: number | undefined) => boolean;
   isValidAlpha: (a: number) => boolean;
   fromHSL: (hsl: { h: number; s: number; l: number }) => ColorInstance;
 }
@@ -516,10 +516,10 @@ function isIntegerBetweenMinAndMax(number, min?, max?) {
   min = min || 0;
   max = max || 255;
 
-  if (number % 1 !== 0
+  if (typeof number !== 'number'
+       || number % 1 !== 0
        || number < min
        || number > max
-       || typeof number !== 'number'
        || isNaN(number)) {
     return false;
   }
diff --git a/packages/devextreme/js/__internal/ui/color_box/color_box.ts b/packages/devextreme/js/__internal/ui/color_box/color_box.ts
index 51b5f6cb6571..30287931a576 100644
--- a/packages/devextreme/js/__internal/ui/color_box/color_box.ts
+++ b/packages/devextreme/js/__internal/ui/color_box/color_box.ts
@@ -219,7 +219,7 @@ class ColorBox extends DropDownEditor<ColorBoxProperties> {
       onValueChanged: ({ event, value: changedValue, previousValue }): void => {
         const { applyValueMode: currentValueMode } = this.option();
         const isInstantlyMode = currentValueMode === 'instantly';
-        const isOldValue = colorUtils.makeRgba(changedValue) === previousValue;
+        const isOldValue = colorUtils.makeRgba(new Color(changedValue)) === previousValue;
         const isChangesApplied = isInstantlyMode || this._colorViewEnterKeyPressed;
         const isValueCleared = this._shouldSaveEmptyValue;
 
@@ -238,7 +238,7 @@ class ColorBox extends DropDownEditor<ColorBoxProperties> {
   _enterKeyHandler(e: KeyboardEvent): boolean | undefined {
     const newValue = this._input().val();
     const { value, editAlphaChannel } = this.option();
-    const oldValue = value && editAlphaChannel ? colorUtils.makeRgba(value) : value;
+    const oldValue = value && editAlphaChannel ? colorUtils.makeRgba(new Color(value)) : value;
 
     if (!newValue) return false;
 
@@ -251,7 +251,8 @@ class ColorBox extends DropDownEditor<ColorBoxProperties> {
     if (newValue !== oldValue) {
       this._applyColorFromInput(newValue);
       this._saveValueChangeEvent(e);
-      this.option('value', editAlphaChannel ? colorUtils.makeRgba(newValue) : newValue);
+      this.option('value', editAlphaChannel
+        ? colorUtils.makeRgba(new Color(newValue)) : newValue);
     }
 
     if (this._colorView) {
@@ -313,14 +314,14 @@ class ColorBox extends DropDownEditor<ColorBoxProperties> {
 
   _updateNoColorIndicator(): void {
     const { value } = this.option();
-    const hasValue = Boolean(value);
+    const hasValue = value !== null && value !== undefined && value.length > 0;
 
     this._$colorBoxInputContainer.toggleClass(COLOR_BOX_COLOR_IS_NOT_DEFINED, !hasValue);
 
-    if (value !== null && value !== undefined) {
+    if (hasValue) {
       this._cleanNoColorIcon();
 
-      colorUtils.makeTransparentBackground(this._$colorResultPreview, value);
+      colorUtils.makeTransparentBackground(this._$colorResultPreview, new Color(value));
     } else {
       this._$colorResultPreview.removeAttr('style');
       this._renderNoColorIcon();
@@ -345,7 +346,7 @@ class ColorBox extends DropDownEditor<ColorBoxProperties> {
   _renderValue(): DeferredObj<unknown> {
     const { value, editAlphaChannel } = this.option();
     const shouldConvertToColor = value && editAlphaChannel;
-    const text = shouldConvertToColor ? colorUtils.makeRgba(value) : value;
+    const text = shouldConvertToColor ? colorUtils.makeRgba(new Color(value)) : value;
 
     this.option('text', text);
 
@@ -389,7 +390,7 @@ class ColorBox extends DropDownEditor<ColorBoxProperties> {
     }
 
     if (editAlphaChannel) {
-      return colorUtils.makeRgba(value);
+      return colorUtils.makeRgba(newColor);
     }
 
     return value;
diff --git a/packages/devextreme/js/__internal/ui/color_box/color_view.ts b/packages/devextreme/js/__internal/ui/color_box/color_view.ts
index 84ac77dada6e..9b9deb8922b1 100644
--- a/packages/devextreme/js/__internal/ui/color_box/color_view.ts
+++ b/packages/devextreme/js/__internal/ui/color_box/color_view.ts
@@ -417,16 +417,12 @@ class ColorView extends Editor<ColorViewProperties> {
     this._renderAlphaChannelElements();
   }
 
-  _makeTransparentBackground($el: dxElementWrapper, color: string | ColorInstance): void {
-    const colorInstance = color instanceof Color ? color : new Color(color);
-
-    $el.css('backgroundColor', this._makeRgba(colorInstance));
+  _makeTransparentBackground($el: dxElementWrapper, color: ColorInstance): void {
+    $el.css('backgroundColor', this._makeRgba(color));
   }
 
-  _makeRgba(color: string | ColorInstance): string {
-    const colorInstance = color instanceof Color ? color : new Color(color);
-
-    return `rgba(${[colorInstance.r, colorInstance.g, colorInstance.b, colorInstance.a].join(', ')})`;
+  _makeRgba(color:ColorInstance): string {
+    return `rgba(${[color.r, color.g, color.b, color.a].join(', ')})`;
   }
 
   _renderColorPickerContainer(): void {
@@ -671,7 +667,7 @@ class ColorView extends Editor<ColorViewProperties> {
     this._$currentColor = $('<div>').addClass([COLOR_VIEW_COLOR_PREVIEW, COLOR_VIEW_COLOR_PREVIEW_COLOR_NEW].join(' '));
     this._$baseColor = $('<div>').addClass([COLOR_VIEW_COLOR_PREVIEW, COLOR_VIEW_COLOR_PREVIEW_COLOR_CURRENT].join(' '));
 
-    this._makeTransparentBackground(this._$baseColor, matchValue ?? '');
+    this._makeTransparentBackground(this._$baseColor, new Color(matchValue ?? BLACK_COLOR));
     this._makeTransparentBackground(this._$currentColor, this._currentColor);
 
     $colorsPreviewContainerInner.append([this._$baseColor, this._$currentColor]);
@@ -946,7 +942,7 @@ class ColorView extends Editor<ColorViewProperties> {
   }
 
   _updateColor(isHex: boolean, args: ValueChangedEvent): void {
-    let rgba:number[] = [];
+    let rgba: number[] = [];
     let newColor = '';
 
     if (isHex) {
@@ -954,9 +950,13 @@ class ColorView extends Editor<ColorViewProperties> {
     } else {
       rgba = this._validateRgb();
       if (this._alphaChannelInput) {
-        const { value } = this._alphaChannelInput.option();
-        rgba.push(value !== undefined && this._currentColor.isValidAlpha(value)
-          ? value : this._currentColor.a);
+        const { value: alphaValue } = this._alphaChannelInput.option();
+        const isValidAlpha = alphaValue !== undefined
+          && this._currentColor.isValidAlpha(alphaValue);
+
+        const valueToAdd = isValidAlpha ? alphaValue : this._currentColor.a;
+
+        rgba.push(valueToAdd);
         newColor = `rgba(${rgba.join(', ')})`;
       } else {
         newColor = `rgb(${rgba.join(', ')})`;
@@ -980,8 +980,7 @@ class ColorView extends Editor<ColorViewProperties> {
     let { value: g } = this._rgbInputs[1].option();
     let { value: b } = this._rgbInputs[2].option();
 
-    const isInvalidRgb = r === undefined || g === undefined || b === undefined
-      || !this._currentColor.isValidRGB(r, g, b);
+    const isInvalidRgb = !this._currentColor.isValidRGB(r, g, b);
     if (isInvalidRgb) {
       r = this._currentColor.r;
       g = this._currentColor.g;

From b66442e7e673a1c270cacaae8e0fafc871498dc4 Mon Sep 17 00:00:00 2001
From: Andrei Vorobev <andrei.vorobev@devexpress.com>
Date: Thu, 28 May 2026 10:47:10 +0300
Subject: [PATCH 3/3] ColorBox: fix space formatting

---
 packages/devextreme/js/__internal/ui/color_box/color_view.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/devextreme/js/__internal/ui/color_box/color_view.ts b/packages/devextreme/js/__internal/ui/color_box/color_view.ts
index 9b9deb8922b1..1a70c8a699af 100644
--- a/packages/devextreme/js/__internal/ui/color_box/color_view.ts
+++ b/packages/devextreme/js/__internal/ui/color_box/color_view.ts
@@ -421,7 +421,7 @@ class ColorView extends Editor<ColorViewProperties> {
     $el.css('backgroundColor', this._makeRgba(color));
   }
 
-  _makeRgba(color:ColorInstance): string {
+  _makeRgba(color: ColorInstance): string {
     return `rgba(${[color.r, color.g, color.b, color.a].join(', ')})`;
   }