Hex Code Brightness PHP?

Posted by Juddling on Stack Overflow See other posts from Stack Overflow or by Juddling
Published on 2010-06-10T14:05:28Z Indexed on 2010/06/10 14:22 UTC
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Filed under:

php

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color

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colors

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hex

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brightness

I want users on my website to be able to pick a hex colour, and I just want to display white text for dark colours and black text for light colours. Can you work out the brightness from a hex code (preferably PHP)?

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