Hex representation of a color with alpha channel?
Is there a W3C or any other noteworthy standard on how to represent a color (including alpha channel) in hex format?

Is it #RRGGBBAA or #AARRGGBB ?
Hex representation of a color with alpha channel?
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Is there a W3C or any other noteworthy standard on how to represent a color (including alpha channel) in hex format?

Is it #RRGGBBAA or #AARRGGBB ?