For example, you want to set 40% alpha transparence to #000000 (black color), you need to add 66 like this #66000000.
- 100% — FF
 - 99% — FC
 - 98% — FA
 - 97% — F7
 - 96% — F5
 - 95% — F2
 - 94% — F0
 - 93% — ED
 - 92% — EB
 - 91% — E8
 - 90% — E6
 - 89% — E3
 - 88% — E0
 - 87% — DE
 - 86% — DB
 - 85% — D9
 - 84% — D6
 - 83% — D4
 - 82% — D1
 - 81% — CF
 - 80% — CC
 - 79% — C9
 - 78% — C7
 - 77% — C4
 - 76% — C2
 - 75% — BF
 - 74% — BD
 - 73% — BA
 - 72% — B8
 - 71% — B5
 - 70% — B3
 - 69% — B0
 - 68% — AD
 - 67% — AB
 - 66% — A8
 - 65% — A6
 - 64% — A3
 - 63% — A1
 - 62% — 9E
 - 61% — 9C
 - 60% — 99
 - 59% — 96
 - 58% — 94
 - 57% — 91
 - 56% — 8F
 - 55% — 8C
 - 54% — 8A
 - 53% — 87
 - 52% — 85
 - 51% — 82
 - 50% — 80
 - 49% — 7D
 - 48% — 7A
 - 47% — 78
 - 46% — 75
 - 45% — 73
 - 44% — 70
 - 43% — 6E
 - 42% — 6B
 - 41% — 69
 - 40% — 66
 - 39% — 63
 - 38% — 61
 - 37% — 5E
 - 36% — 5C
 - 35% — 59
 - 34% — 57
 - 33% — 54
 - 32% — 52
 - 31% — 4F
 - 30% — 4D
 - 29% — 4A
 - 28% — 47
 - 27% — 45
 - 26% — 42
 - 25% — 40
 - 24% — 3D
 - 23% — 3B
 - 22% — 38
 - 21% — 36
 - 20% — 33
 - 19% — 30
 - 18% — 2E
 - 17% — 2B
 - 16% — 29
 - 15% — 26
 - 14% — 24
 - 13% — 21
 - 12% — 1F
 - 11% — 1C
 - 10% — 1A
 - 9% — 17
 - 8% — 14
 - 7% — 12
 - 6% — 0F
 - 5% — 0D
 - 4% — 0A
 - 3% — 08
 - 2% — 05
 - 1% — 03
 - 0% — 00
 
You can see other best Android Gists or offer your just here https://github.com/lopspower/BestAndroidGists 👍.
