[csswg-drafts] [css-color-4] Update the system color pairings with the new system colors (#5639)

andreubotella has just created a new issue for https://github.com/w3c/csswg-drafts:

== [css-color-4] Update the system color pairings with the new system colors ==
Issue #4924 added the new system colors `Mark`, `MarkText` and `ButtonBorder`, but it didn't update the system color pairings to include them. "`Mark` background with `MarkText` foreground" is an obvious addition, but the color combinations for `ButtonBorder` would need more than that.

If I'm reading "Understanding WCAG" correctly, the following adjacent color contrasts would be needed:
- A `ButtonFace` or `Field` background with a `ButtonBorder` border and adjacent color `Canvas`.
- A `Canvas` background with a `ButtonBorder` border and adjacent color `Canvas` (since it was mentioned in #4924 that `ButtonBorder` could also be used for styling `<hr />` elements).

And `Highlight` and `Mark` might also be added as alternatives to `Canvas` for those contrasts.

Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/5639 using your GitHub account


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Received on Tuesday, 20 October 2020 07:20:23 UTC