Re: [csswg-drafts] [css-color-4] matching displayed colors between CSS colors and images when those colors are outside the displayable gamut (#10055)

Thank you for filing this issue!

I believe that color matching between CSS, image, video, and canvas is a very important feature. I also have a general uneasiness about any color management system that does not deliver color matching across different input sources.

The first two major partners that requested CSS Level 4 from us explicitly wanted color matching between CSS and images (for one) and WebGL canvas (for the other). I have a bit more detail about their exact use cases in [this comment](https://github.com/w3c/csswg-drafts/issues/7610#issuecomment-1226026465), which was an elaboration on [this comment](https://github.com/w3c/csswg-drafts/issues/7610#issuecomment-1225938386). Also of note is the prominence of color matching with images as the motivation in [this post](https://webkit.org/blog/6682/improving-color-on-the-web/).

In the current CSS gamut mapping specification, it is impossible for a content author to achieve the same color across CSS, images, video, and canvas. The impossibility of color matching, when it was requested by all partners who had interest in the features of CSS Color Level 4, was the strongest reason for me to be cautious about implementing the current CSS gamut mapping solution.


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Received on Wednesday, 20 March 2024 22:10:00 UTC