[Webkit-unassigned] [Bug 234697] New: CSS color() function should not clamp channels to the 0-1 range

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=234697

            Bug ID: 234697
           Summary: CSS color() function should not clamp channels to the
                    0-1 range
           Product: WebKit
           Version: Other
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: sam at webkit.org

The color() function in CSS Color 4 - https://drafts.csswg.org/css-color/#color-function - specifies that component values less than 0% or greater than 100% are not invalid:

"An out of gamut color has component values less than 0 or 0%, or greater than 1 or 100%. These are not invalid; instead, for display, they are gamut-mapped using a relative colorimetric intent which brings the values within the range 0/0% to 1/100% at computed-value time."


I have some questions about what this means in practice, and if computed value time is the right time to gamut map rather than at use, and I will raise these with the spec editors.

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