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Re: Border width for regions on a map/chart
From: Steve Green
Date: Sep 17, 2019 6:31PM
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The Understanding page for WCAG 1.4.11 contains lots of explanations and examples, but it does not specify a minimum border width. In fact, some of the examples of textboxes have a border width of just one pixel. I am 100% certain that the minimum border width is not specified anywhere in any authoritative source.
In practice, I find that 3 pixels is usually enough, and I get a lot of push-back from designers and other stakeholders if I ask for anything wider. The same applies to focus indicators.
Steve Green
Managing Director
Test Partners Ltd
-----Original Message-----
From: WebAIM-Forum < <EMAIL REMOVED> > On Behalf Of Ryan E. Benson
Sent: 18 September 2019 01:20
To: WebAIM Discussion List < <EMAIL REMOVED> >
Subject: [WebAIM] Border width for regions on a map/chart
Hi all.
I think this topic has came up in the past. After a few colors, it grows difficult to maintain a good contrast. One way to offset that is to have a strong border between sections, both in color and thickness. If my memory serves me correctly, the conversation broke down after it got to 2, 5, 10, and 10+ pixels.
Personally I am in the 5-10px range, but the individual wants a source.
Thanks
--
Ryan E. Benson
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