透明度

00是完全透明(百分百透明)，FF就是完全不透明
透明度 16进制表示
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