Transparency is the first not realize how carefully explained, directly on the dry (direct use)
Calculations 1. Transparency
Transparency is divided into 256 levels, i.e., 0 - 256,0 is transparent, opaque 255 is
transparency (transparent) 0 -> 255 (opaque) corresponding hexadecimal (transparent) 00 -> FF (opaque)
For example: 50% opacity
50% i.e. half 256, i.e., 128, because the count is zero, it is 127, it is converted to hexadecimal 7F
2. Transparency table directly
Transparency hexadecimal
100% 00
99% 03
98% 05
97% 07
96% 0A
95% 0D
94% 0F
93% 12
92% 14
91% 17
90% 1A
89% 1C
88% 1E
87% 21
86% 24
85% 26
84% 29
83% 2B
82% 2E
81% 30
80% 33
79% 36
78% 38
77% 3B
76% 3D
75% 40
74% 42
73% 45
72% 47
71% 4A
70% 4D
69% 4F
68% 52
67% 54
66% 57
65% 59
64% 5C
63% 5E
62% 61
61% 63
60% 66
59% 69
58% 6B
57% 6E
56% 70
55% 73
54% 75
53% 78
52% 7A
51% 7D
50% 80
49% 82
48% 85
47% 87
46% 8A
45% 8C
44% 8F
43% 91
42% 94
41% 96
40% 99
39% 9C
38% 9E
37% A1
36% A3
35% A6
34% A8
33% AB
32% AD
31% B0
30% B3
29% B5
28% B8
27% BA
26% BD
25% BF
24% C2
23% C4
22% C7
21% C9
20% CC
19% CF
18% D1
17% D4
16% D6
15% D9
14% DB
13% DE
12% E0
11% E3
10% E6
9% E8
8% EB
7% ED
6% F0
5% F2
4% F5
3% F7
2% FA
1% FC
0% FF
3. Usage:
40% transparency. Before color #FFFFFF transparency after color: # 99 FFFFFF
by Leilei