Re: [csswg-drafts] [css-color-4] Achromatic colors converted to hue-ish spaces should treat hue as "missing", not NaN (#6107)

> It's an error case, so it doesn't really matter so long as it's well-defined. 

No, it isn't an error case. The color `#777` is not an error. But it has an undefined hue, because it is achromatic. And a range of visually-identical colors near that color (I mean, DeltaE2000 much less than 1, so indistinguishable visually) will end up with essentially random hue angles in LCH and HSL, because tiny numerical differences have the hue angle swinging around wildly while the chroma is almost zero.

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Received on Wednesday, 24 March 2021 02:11:36 UTC