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We don’t all see colour the same

Designing for colour blindness is more than just being considerate. If there are items on our website which can only be distinguished by colour, for some users, that’s going to mean mistakes can be made. For example, what if we show the state of something like this?

Current status:
Selected update:

To the millions of people who are red- and green-blind, that can be almost meaningless – and we all know that mistakes made on a website cause both parties grief and expense.

It’s also astonishing how many businesses have multi-coloured logos or signs where the colour contrast makes the words almost unreadable for some people.

There’s a great article on the subject here, with some really good resources.