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Re: 1.4.1 use of color for state indicator

for

From: glen walker
Date: Mar 9, 2020 6:20AM

Thanks, Jonathan. That sounds nice but there's nothing in the success
criterion to imply that. It makes logical sense, but it's not spelled out
anywhere.

When you say "something" has a contrast greater than 3:1, is that something
the two states? Selected and unselected, even though they're not adjacent
colors?

As far as grayscale, I could take white and yellow, a contrast of 1.1, and
when viewed in grayscale, the yellow will be slightly gray. Are you saying
that would pass? Or are you saying convert the colors to grayscale first,
then take the ratio of the resulting grays and see if it's greater than 3:1?

When you get into hue vs luminance, it's hard to explain to
non-accessibility people (or maybe people in general) that 1.4.1 use of
*color* might not really mean color. Both red and pink are colors. Using
one for one meaning and the other for another meaning is using two colors.
Saying that doesn't fail 1.4.1 because they're not really colors, they're
luminance, just feels weird.