CSS Color 4 RGB/RGBA syntax

Category: CSS
Type: New or changed feature
Status: Enabled by default (Chrome 65)
Intent stage: None

Summary

Update parsing of RGB() and RGBA() to the syntax described in CSS Color 4. The functions were synonymized, along with allowing whitespace to separate the channels instead of commas, introducing a backslash as a new way to separate the alpha parameter, and allowing percent values for the alpha parameter.

Standards & signals

Specification: https://drafts.csswg.org/css-color/#rgb-functions
Firefox: Shipped/Shipping
Safari: No signal
Web developers: No signals
Tracking bug: https://bugs.chromium.org/p/chromium/issues/detail?id=788707

Docs: https://developer.mozilla.org/en-US/docs/Web/CSS/color_value

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