[transition] CR Request for CSS Color Module Level 4 - css-color-4

This is a transition request for a Candidate Recommendation
CR Request for CSS Color Module Level 4 - css-color-4
from https://github.com/w3c/transitions/issues/712

# Document title, URLs, estimated publication date
CSS Color Module Level 4
https://drafts.csswg.org/css-color-4/
once approved

# Abstract
This specification describes CSS [`<color>`](https://drafts.csswg.org/css-color-4/#typedef-color) values, and properties for foreground color and group opacity.

# Status
[Status](https://drafts.csswg.org/css-color-4/#sotd) (as ED)

# Link to group's decision to request transition
[in-progress CfC](https://github.com/w3c/csswg-drafts/issues/12035) ends 21 Apr

# Changes
- Changes are primarily clarifictions and corrections based on implementer feedback
- Added an [HTML-Compatible hex serialization for sRGB](https://drafts.csswg.org/css-color-4/) (at WhatWG request)
- [Changes](https://drafts.csswg.org/css-color-4/)

# Requirements satisfied
No change

# Dependencies met (or not)
- See WhatWG dependency
- The HTML LS now normatively references CSS Color 4 for all color definitions, parsing and serialization
- CSS Snapshot 2024 references CSS Color 4 in the official definition


# Wide Review
- [Review tracker (all levels)](https://www.w3.org/PM/horizontal/review.html?shortname=css-color)
- [WhatWG request](https://github.com/whatwg/html/issues/8917#issuecomment-2216693534)
- [CSSWG issue in response](https://github.com/w3c/csswg-drafts/issues/10550)

# Issues addressed
[Issues list](https://github.com/w3c/csswg-drafts/issues?q=state%3Aopen%20label%3A%22css-color-4%22)

# Formal Objections
None

# Implementation
Excellent implementation status, 12k tests
Featured in Interop2022 and Interop2023
![Image](https://github.com/user-attachments/assets/8254ac3c-d423-4ada-925e-1dbe90c22a4c)
[Test suite (all levels)](https://wpt.fyi/results/css/css-color/)

# Patent disclosures
[IPP](https://www.w3.org/groups/wg/css/ipr/)


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Received on Wednesday, 16 April 2025 20:05:14 UTC