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A PostCSS plugin to use relative chroma in an upgraded oklch() CSS notation.
The plugin has not yet been published on npm. To use it, you can download the dist folder and configure your postcss.config.js file to use it. Check the documentation repo to see how I use it.
This is a work in progress which might change in the future.
The proposal is: oklch(gamut L RC H)
gamut can either be srgb, display-p3 or rec2020.
Exemple: oklch(display-p3 80% 100% 20) which means: “for a lightness of 80 % and a hue of 20, I want a color with the maximum chroma possible in the P3 gamut” and translate to oklch(80% 0.148 20).