- From: James Stuckey Weber via GitHub <noreply@w3.org>
- Date: Tue, 19 Aug 2025 15:17:38 +0000
- To: public-css-archive@w3.org
> It's not clear to me if this resolution only applies to oklab/oklch colors?
It's also unclear to me, but to gather the relevant info-
The [initial resolution](https://github.com/w3c/csswg-drafts/issues/9449#issuecomment-2162711081) was "Gamut map all device independent color spaces" and "RGB color spaces (srgb, display-p3, rec2020, a98rgb) do not gamut map."
Device independent would include Lab, LCH, Oklab, and OKLch. XYZ spaces aren't specifically mentioned in the resolution. @ccameron-chromium suggests [limiting this change](https://github.com/w3c/csswg-drafts/issues/10579#issue-2411507542) to just Oklab and OKLch.
In addition to specifying the impacted spaces, we should specify when gamut mapping is triggered in a case like this-
```css
a {
background: linear-gradient(in rec2020, oklch(70% 0.5 340), oklch(90% 0.5 200));
}
b {
background: linear-gradient(in oklch, yellow, blue);
}
```
I would expect `a` to be clipped and `b` to be gamut mapped where it goes out of rec2020- in other words, the interpolation space, not the space of the colors being interpolated, would be the deciding factor.
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Received on Tuesday, 19 August 2025 15:17:39 UTC