- From: Chris Lilley via GitHub <sysbot+gh@w3.org>
- Date: Sun, 05 Jun 2022 14:59:09 +0000
- To: public-css-archive@w3.org
A **Formal Objection** to CSS Color 4 `color-contrast()` referencing the W3C Recommendation WCAG 2.1 Color Contrast [has been raised](https://github.com/w3c/csswg-drafts/issues/7310#issuecomment-1146693305) by @myndex Resolving this would seem to require: - removing `color-contrast()` from CSS Color 5 - deprecating the color-contrast portion of WCAG 2.1 and republishing the Recommendation Moving forward to replace the functionality would require: - helping drive APCA towards consensus - getting a normative reference to APCA added to WCAG 3.0 (currently it is just mentioned in passing, as a possible _tool_ to use, and the mathematics of the calculation are not referenced **at all**) - creating a pair of functions (APCA does not treat text and background as identical, unlike WCAG 2.x): - `color-contrast-text()` - `color-contrast-background()` `color-contrast-text()` would take a background color and a list of candidate text colors; `color-contrast-background()` would take a text color and a list of candidate background colors. Both functions would take an optional target L<sup>c</sup>. -- GitHub Notification of comment by svgeesus Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/7297#issuecomment-1146819748 using your GitHub account -- Sent via github-notify-ml as configured in https://github.com/w3c/github-notify-ml-config
Received on Sunday, 5 June 2022 14:59:10 UTC