Contact emails: [email protected], [email protected]

*Explainer: *go/rcs-chromium

Specification: https://www.w3.org/TR/css-color-5/#relative-colors

Summary

The relative color syntax allows developers to define colors by modifying 
the parameters of other colors. For example: oklab(from magenta calc(l * 
0.8) a b); Will result in an oklab magenta that is 80% as light. 

Blink component: Blink>CSS 
<https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3ECSS>

TAG review: None

Risks

Interoperability and Compatibility

None

*Gecko*: No signal

*WebKit*: Shipped (https://caniuse.com/css-relative-colors)

*Web developers*: No signals

*Other signals*:

WebView application risks

Does this intent deprecate or change behavior of existing APIs, such that 
it has potentially high risk for Android WebView-based applications?

None


Debuggability

[email protected] of dev tools team is on it. Work in progress.


Will this feature be supported on all six Blink platforms (Windows, Mac, 
Linux, Chrome OS, Android, and Android WebView)? Yes

Is this feature fully tested by web-platform-tests 
<https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>
? Yes
https://wpt.fyi/results/css/css-color/parsing/color-valid-relative-color.html
https://wpt.fyi/results/css/css-color/parsing/color-invalid-relative-color.html
https://wpt.fyi/results/css/css-color/parsing/color-computed-relative-color.html

Flag name on chrome://flags: Experimental Web Platform features

Finch feature name: WebFeature::kCSSRelativeColor

Requires code in //chrome? False

Tracking bug: https://crbug.com/1475009

Estimated milestones
DevTrial on desktop
118

Anticipated spec changes
None

Link to entry on the Chrome Platform Status: 
https://chromestatus.com/feature/5205844613922816

This intent message was generated by Chrome Platform Status 
<https://chromestatus.com/>.

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