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24 ways to impress your friends

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sure rgba() is cool – but why is the alpha channel given in a 0 to 1 value? why it isnt 8-bit too like in all other 24+8 bit RGBA color spaces?

I understand that it depends on the already specified type “alphavalue” – but why not using a more common notation instead?

and of course – why not allow 32 bit hex values? what is so wrong for FF000080 for 50% red?