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Re: [csswg-drafts] [css-ui] Two different colours for a "double" style outline

From: David MacDonald via GitHub <sysbot+gh@w3.org>
Date: Sun, 09 Apr 2017 20:45:10 +0000
To: public-css-archive@w3.org
Message-ID: <issue_comment.created-292811702-1491770709-sysbot+gh@w3.org>
@LeaVerou
>  "you are making a very good accessibility case for multiple outlines, since there is no existing outline color that can always be guaranteed to be have sufficient contrast with its backdrop or even be visible at all. No, not even invert, as the inverse of 50% gray is 50% gray. We can certainly discuss with the WG about adding this in Backgrounds 4 and UI 4.

That would be great. It would really help us as we provide requirements on [contrast ratio minimums for focus indicators](https://github.com/w3c/wcag21/issues/10). Providing two colours side by side on the outline would ensure its always visible. Providing 3 lines might even be better (i.e. white/black/white would ensure the black outline always can be seen because it will have white on each side of it.)

We'd be glad to be involved in any discussion about it, where we could explain the need for people with low vision and those who are color blind.

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Received on Sunday, 9 April 2017 20:45:17 UTC

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