[css-color-5] What are the color functions (or color adjusters)? #4743
Description
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The css-color-5 specification makes references to
<color-functions>. Would these functions include thelightnessadjuster in Example 10? If not, what are those adjusters to be referred to as? -
Where might I find a definitive list of those adjusters?
- The css-color-4 specification has a somewhat related and entertaining entry:
The color-functions are , ,
, , , , , , and .
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Are the adjusters as follows?
lightness,a, andbwithin the LAB color space;lightness,chroma, andhuewithin the LCH color space;hue,saturation, andlightnesswithin HSL color space; and,red,green, andbluewithin the RGB or SRGB color space.
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UPDATE: I realize now that HSL also uses
lightnessand does not useluminance(see comment history). If I explicitly set my colorspace torgband then adjustlightness()does it — A. permanently move me to the LCH colorspace; B. temporarily move me to the LCH colorspace to perform the adjustment and then move me back; C. fail; D. something else? I think it matters, because I would want to know what the computed value should be when this is natively supports, and because I would want to write a polyfill that followed that same expectation as closely as possible.