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Re: [csswg-drafts] [css-color-4] Define color interpolation in one place, reference that in other specs (#5883)

From: Chris Lilley via GitHub <sysbot+gh@w3.org>
Date: Wed, 20 Jan 2021 18:31:30 +0000
To: public-css-archive@w3.org
Message-ID: <issue_comment.created-763846538-1611167489-sysbot+gh@w3.org>
Not that surprising. CSS Color 4 is about specifying colors. (It's also pretty stable and seeing multiple implementations, so will go to CR soon).

CSS Color 5 is about combining and manipulating color - mixing, contrast calculation, and the like. It is therefore natural that it has a section on Color interpolation, which includes [alpha premultiplication](https://drafts.csswg.org/css-color-5/#interpolation-alpha), and [hue interpolation](https://drafts.csswg.org/css-color-5/#hue-interpolation) (that subsection mainly written by @LeaVerou , with corrections by @dbaron).

Color 5 is less mature, though we do have a resolution to publi

So the color interpolation is in the right specification. It is true though that it should probably hace been called something like CSS Color Manipulation 1.

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