Are there any colors that should not be used in UI design? Which one(s)? Why?
closed as not constructive by Charles Wesley, JohnGB, Ben Brocka♦ Apr 19 at 1:35
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There are no colours that shouldn't be used, but there are combinations that aren't helpful in terms of aesthetic and in ease of perception, or inappropriate use of colour that clashes with culturally accepted symbols.
Don't forget to check that the colour blind will not have difficulty with your UI, and that the use of colour to encode information is only done so redundantly (if you take the colour away people can still use the UI easily).
I recommend Ware's Visual Thinking for Design as a good book that covers a decent amount of colour theory and its application.
As a handy shortcut to spot many problems, take a look at your UI in greyscale (and/or carry out initial design without colour) and see if there are any colour-use problems with your UI.