About Hex Color Codes in Flex (AS3)

Hi folks,

I recognized a lot of views on the last post I made came from users searching for stuff like 0xFFFFFFFF color code or something in that manner. This made me suggest there are a lot of people who do not understand what this means to Flex/Flash using Actionscript 3. So here is a little explanation:

Imagine you’d have a color code like this:


This means a full opaque red for Flex, because the whole color code can be splitted into 4 regions (called channels) : Alpha, Red, Green and Blue

So for our example above this means you’re having the following channel options:

Alpha = FF (100%)
Red = FF (100%)
Green = 00
Blue = 00

So if you want to have a full opaque Blue you would write:


Alpha = FF (100%)
Red = 00
Green = 00
Blue = FF (100%)

Now if you want to bring in lesser opacity you just have to reduce the alpha value. So to get a half opaque Green you would write:


Alpha = 88 (50%)
Red = 00
Green = FF ( 100%)
Blue = 00

So the conclusion out of this is that you will get a bright fully opaque white with writing:


And a fully transparent “black” (transparent is transparent, no matter which color you take) with the following:


Some people who have a good understanding of colors (not me) can mix nearly every color just by mixing the colors in their head. If you are not interested in that (like me) just take a color picker and look at the Hexadecimal Code of the color.

The above will help you to get deeper into making effects using the Bitmap and BitmapData class and their methods. You can see a really simple example in the last tutorial – it shows you how to take out specific colors from an Bitmap in Flex / Flash using Actionscript 3. So go and have some fun with Bitmaps and Colors !

  1. Thanx fot this tutorial !

  2. Thanks for helping me understand this color format!

    • Rose
    • December 21st, 2010

    Very helpful! Thank you 🙂

    • Joey
    • June 24th, 2011

    Thank you, exactly what I was looking for!

    • tugBUT
    • July 31st, 2011

    Yay, I needed this xD

    • Dowlers
    • September 29th, 2011

    Thanks I was always stumped by this and it’s so simple!

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