[css-2025][css-color-adjust-1] Add CSS Color Adjust 1 to Reliable CRs

[SebastianZ]

Splitting the discussion from #9770 for adding CSS Color Adjust 1 to the Reliable Candidate Recommendations section of the CSS Snapshot 2025.

Data to consider:

Current status: CRD (last published: 12 August 2025), ED from 6 August 2025
WPT: passing tests (stable): Chrome: 165, Edge: 165, Firefox: 164, Safari: 116; interop: 112 / 169 (66.3%), 160 / 169 (94.7%) for Chrome, Edge and Firefox
Current Snapshot section: Rough Interoperability
Open issues: on GitHub: 11 (~9 substantial), in spec.: 1

Summary: High interoperability between two engines, spec. in CRD, some open issues

Sebastian

[css-meeting-bot]

The CSS Working Group just discussed [css-2025][css-color-adjust-1] Add CSS Color Adjust 1 to Reliable CRs, and agreed to the following:

• RESOLVED: move css-color-adjust-1 to Reliable CR section

The full IRC log of that discussion

<emeyer> SebastianZ: we have good platform test coverage of this, especially for Chrome/Edge/Firefox
<emeyer> …not too many open GitHub issues, proposing to move to Reliable CR
<emeyer> astearns: Any concerns?
<emeyer> RESOLVED: move css-color-adjust-1 to Reliable CR section