- From: Isaac Muse via GitHub <sysbot+gh@w3.org>
- Date: Sat, 16 Dec 2023 17:27:39 +0000
- To: public-css-archive@w3.org
Keep in mind this approach works for _most_ cylindrical color spaces, OkLCh and LCh included. We could, theoretically, better handle OkLCh and LCh negative chroma when converting back to Oklab and Lab without having to hard clamp to zero. --- As I side note, I did mention _most_ cylindrical spaces. Depending on the model, this may not always be true, as a non CSS example CAM16 does not work this way due to the complex way in which chroma is calculated for a given lightness and hue. The only way to resolve such saturation is to convert it back to the XYZ base and then convert it forward to CAM16 again, though once you are out of the visible spectrum, you can still get negative chroma no matter what you do. The algorithm just doesn't handle colors so far out. This is true for some other spaces like HSV as well. It is better to convert HSV back to sRGB and then back to HSV, and if the colors happen to resolve, great, if not 🤷🏻. I mainly mention this for anyone thinking this works for every cylindrical space, without exception. -- GitHub Notification of comment by facelessuser Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/9222#issuecomment-1858876953 using your GitHub account -- Sent via github-notify-ml as configured in https://github.com/w3c/github-notify-ml-config
Received on Saturday, 16 December 2023 17:27:41 UTC