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Re: 1.4.1 use of color for state indicator

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From: Jonathan Avila
Date: Mar 9, 2020 6:54AM

> All the research into colour perception involves both hue and luminance, and the WAI colour contrast algorithm is based on both.

Yes, the contrast ratio does take into account more than lightness -- to help users with color perception challenges. That's why a contrast of >= 3:1 should be sufficient as it takes into account these other aspects.

Jonathan