RESOLVED FIXED305683
REGRESSION (297279@main): P3 colors can be mismatched between painted content, and layer backgrounds (see on book.stevejobsarchive.com). 
https://bugs.webkit.org/show_bug.cgi?id=305683
Summary REGRESSION (297279@main): P3 colors can be mismatched between painted content...
Simon Fraser (smfr)
Reported 2026-01-16 17:46:29 PST
https://book.stevejobsarchive.com used a display-p3 color in CSS, and this was used both for painted backgrounds, and for "simple container" layers where we set it as layer.backgroundColor. This bug was introduced by 297279@main, which added clamping of the colors in the painting path to sRGB, but not in the layer backgroundColor path. <rdar://166725679>
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Radar WebKit Bug Importer
Comment 1 2026-01-16 17:46:34 PST
<rdar://problem/168337432>
Simon Fraser (smfr)
Comment 2 2026-01-16 18:00:54 PST
Pull request: https://github.com/WebKit/WebKit/pull/56752
EWS
Comment 3 2026-01-26 19:37:32 PST
Committed 306261@main (d6203e5d590d): <https://commits.webkit.org/306261@main> Reviewed commits have been landed. Closing PR #56752 and removing active labels.
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