- From: Chris Lilley via GitHub <sysbot+gh@w3.org>
- Date: Tue, 02 Mar 2021 17:10:19 +0000
- To: public-css-archive@w3.org
> All I was trying to establish is whether there was some theoretical bounds on Lab that I was unaware of that didn't also apply to XYZ. XYZ has a theoretical non-negative bound (but in practice, enforcing that affects round-tripping so should not be done). Lab has a clear bound at L=0 (but again, round-tripping is enhanced if that is not enforced) and is defined to be relative to the current adapted white at L=100. That implies that specular whites should be at L > 100, so CSS Color 4 carefully allows values > 100; but it is not clear that the cube-root L power law is appropriate above media white. a and b are theoretically unbounded. Some implementations impose arbitrary limits. One notable implementation enforces 128 to -127 which arbitrarily clips real, useful colors. Pointers surface gamut exceeds that, for example; and real-world content can easily have colors outside the surface gamut. -- GitHub Notification of comment by svgeesus Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/6061#issuecomment-789064975 using your GitHub account -- Sent via github-notify-ml as configured in https://github.com/w3c/github-notify-ml-config
Received on Tuesday, 2 March 2021 17:10:21 UTC