Supporting CSS color level 4

[Ayc0]

What do you think about supporting CSS colors level 4 https://www.w3.org/TR/css-color-4/:

• rgb rgb(12 53 80) and rgb(12 53 80 / 0.5): https://www.w3.org/TR/css-color-4/#rgb-functions
• hsl: hsl(120deg 100% 50%) and hsl(120deg 100% 50% / 0.5): https://www.w3.org/TR/css-color-4/#the-hsl-notation
• lab: lab(12% 39 20) and lab(12% 39 20 / 0.5): https://www.w3.org/TR/css-color-4/#specifying-lab-lch
• lch: lch(29% 44.2 27) and lch(29% 44.2 27 / 0.5): https://www.w3.org/TR/css-color-4/#specifying-lab-lch

[Fil]

see also https://github.com/d3/d3-color/pull/71

[Ayc0]

Ohhh I looked at the opened issue but I haven't checked the opened PRs

Thanks 🙇‍♂️

[Ayc0]

I re-opened this issue and the related PR isn't merged yet. So it'll make it easier to track the support for CSS level 4 (if people want to link this issue)