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Re: Retrofitting graphics for colorblind accessibility
From: Nick Bromley
Date: Aug 15, 2023 2:49PM
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One side effect you should consider is the potential for regular lines/patterns to trigger visual disturbances, particularly if they also involves high contrast. In severe cases, it can trigger migraines and possible even seizures.
Here's some old UK guidance for TV broadcasters on pattern usage (includes reference to static and moving images): https://www.ofcom.org.uk/__data/assets/pdf_file/0021/16248/gn_flash.pdf
I thought I'd seen some more recent/extensive guidance but I can't find it now, and maybe I'm mistakenly thinking of something else.
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Nick Bromley
Director & Accessibility Consultant
Red Kite Digital Accessibility Ltd
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