Hex transparency colors in android

http://stackoverflow.com/questions/15852122/hex-transparency-in-colors

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I'm working on implementing a wigdget transparency option for my app widget although I'm having some trouble getting the hex color values right. Being completely new to hex color transparency I searched around a bit although I couldn't find a specific answer to my question. I want to set transparency by hex color so let's say my hex color id "#33b5e5" and I want it to be 50% transparent. Then I'll use "#8033b5e5" because 80 is 50%. I found a useful chart here: http://www.dtp-aus.com/hexadeci.htm . With this data I managed to come up with this: 0% = #00 10% = #16 20% = #32 30% = #48 40% = #64 50% = #80 60% = #96 70% = #112 80% = #128 90% = #144 Now the issues start appearing when I get higher than 100 in hex. Hex color codes can only be 8 symbols long right? For example #11233b5e5 (80%) crashes. What can I do to enable me to use the higher numbers aswell? android colors hex transparency shareedit edited Jan 3 at 21:17 Zach Saucier 12.3k62251 asked Apr 6 '13 at 14:30 SweSnow 1,74961433

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Here's a correct table of percentages to hex values. E.g. for 50% white you'd use #80FFFFFF. 100% — FF 95% — F2 90% — E6 85% — D9 80% — CC 75% — BF 70% — B3 65% — A6 60% — 99 55% — 8C 50% — 80 45% — 73 40% — 66 35% — 59 30% — 4D 25% — 40 20% — 33 15% — 26 10% — 1A 5% — 0D 0% — 00 (source)