Re: [csswg-drafts] [css-color] It should be possible to specify the contrast algorithm for color-contrast() (#7356)

HI Lea @LeaVerou 

> .._.levels don't mean anything outside their algorithm, ....  (e.g. `wcag-aa`),.._

Not only that, but: **AA** encompasses two discrete ratios, 3:1 and 4.5:1, and **AAA** encompasses three distinct ratios, those of AA, and the additional 7:1.

And the 3:1, 4.5:1, and 7:1  as calculated by WCAG 2 math are _different than every other contrast math,_ and the actual results skew differently relative to the overall total luminances being tested as does every other contrast math or method, ever...

And I know you know this but for anyone reading along at home, among the reasons is that there is no such thing as an absolute contrast: **Contrast is not real,** just as color is not real, it is a context sensitive perception and about as hard to nail down as grasping a wet bar of soap in the middle of a typhoon while being chased by hungry wild geese.

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Received on Sunday, 19 June 2022 17:31:58 UTC