diff --git a/README.md b/README.md
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+++ b/README.md
@@ -559,6 +559,7 @@ There're also some great commercial libraries, like [amchart](https://www.amchar
 * [TinyColor](https://github.com/bgrins/TinyColor) - Fast, small color manipulation and conversion for JavaScript.
 * [Vibrant.js](https://github.com/jariz/vibrant.js/) - Extract prominent colors from an image.
 * [color-space](https://github.com/colorjs/color-space) - Conversions between 162 color spaces (OKLCH, CAM16, Munsell, camera logs) with cited references.
+* [colordx](https://github.com/dkryaklin/colordx) - Fast, immutable color conversion and manipulation with CSS Color 4 support (OKLCH, OKLab, Display-P3).
 
 ## I18n And L10n
 *Localization (l10n) and internationalization (i18n) JavaScript libraries.*