[css-color-5] relative color syntax: numbers vs. percentages in calc() #9759
Description
With two implementations on stable channels (Safari 16.4+, Chrome 119+) for the relative color syntax, I’m trying to make sense of the incompatible results I’m seeing on my test page, in order to contribute appropriate web platform tests:
- The only version that works in Safari is
rgb(from #ff6600 calc(100% - r) calc(100% - g) calc(100% - b))(based, if I remember correctly, on a previous version of the spec?). Should the mixing of<percentage>and<number>incalc()here still produce a valid color? - Am I right to understand that the
<number>forrgb()channel keywords is in the range[0,255]and not[0,1]and that Chrome supportingrgb(from #ff6600 calc(1 - r) calc(1 - g) calc(1 - b))rather thanrgb(from #ff6600 calc(255 - r) calc(255 - g) calc(255 - b))is incorrect?