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Afaik this differs from #2864, which primarily requests color-mod().
This is intended for 'CSS Color Module Level 4' color(), allowing to specify profiled colors.
Spec: https://drafts.csswg.org/css-color/#color-function
Example:
em {
color: color(p3 50 250 100);
}
Shamelessly stolen from https://developer.apple.com/library/prerelease/content/releasenotes/General/WhatsNewInSafari/Articles/Safari_10_1.html
Safari 10.1 (& TP) / iOS 10.3 support this, apparently.
+1
This is supported in Safari out of the box (not hidden behind development switches) and is, therefore, able to be used on the web. It's real and represents new wide-gamut color functionality on the web not previously available.
As one notable example, Panic shared stories using this in this tweet thread: https://twitter.com/panic/status/1106633444157607936. It's also in use on their marketing websites, like https://panic.com/nova/ and https://play.date.
I've made a color picker for the P3 color space, at https://p3colorpicker.cool, as another example of it in-use, with the ultimate goal of increasing wide-gamut color adoption.
Now available at https://caniuse.com/#feat=css-color-function
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Now available at https://caniuse.com/#feat=css-color-function