Hex Colors in Android are some times 8 digits. How? What is the difference between #FFFFFF and #FFFFFF00

android android-layout colors hex android-canvas
Vinod picture Vinod · Aug 2, 2011 · Viewed 67.9k times · Source

I sometimes have seen in examples where the coloring in Android is done as #FF191919. I mean a 8 digit hex number . But it should be only a 6 digit number. How are they related? If I want o convert a 6 digit number to a 8 digit number. How to do it? I mean convert #424242 to a 8 digit number coloring? Please let me know the details. Thank you for your time and help.

Answer

Veger picture Veger · Aug 2, 2011

The extra 2 digits are used to define the colors transparency, or alpha channel.

Android uses the ARGB format (or AARRGGBB as you use in your example)

For more (Android-specific) information take a look at the Color documentation

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