Android基础知识颜色的不透明度和RGB颜色十六进制值
Android中的颜色使用形式为"#FFBFBFCC"(html)和0xFF777777(代码)。颜色用8位十六进制数数来表示，前2位表示Alpha 分量(遮光度或者叫不透明度)，剩下的6位是R、G、B的分量，两两一组形成指定的颜色，颜色中字母不区分大小写。
2位不透明度值，FF表示完全不透明，00表示完全透明，所以不透明度在00~FF之间，也就是在0~255之间。所以如果你需要60%的不透明度时，可以255*60% = 153，把153转化为十六进制就是99，那么最前面2位就是99了。
6位RGB分量值，可以在网上找到相对应颜色的十六进制数就可以了。下面也找了各种颜色对应的十六进制值。
#FFFFFF |
#FFFFF0 |
#FFFFE0 |
#FFFF00 |
||||
#FFFAFA |
#FFFAF0 |
#FFFACD |
#FFF8DC |
||||
#FFF68F |
#FFF5EE |
#FFF0F5 |
#FFEFDB |
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#FFEFD5 |
#FFEC8B |
#FFEBCD |
#FFE7BA |
||||
#FFE4E1 |
#FFE4C4 |
#FFE4B5 |
#FFE1FF |
||||
#FFDEAD |
#FFDAB9 |
#FFD700 |
#FFD39B |
||||
#FFC1C1 |
#FFC125 |
#FFC0CB |
#FFBBFF |
||||
#FFB90F |
#FFB6C1 |
#FFB5C5 |
#FFAEB9 |
||||
#FFA54F |
#FFA500 |
#FFA07A |
#FF8C69 |
||||
#FF8C00 |
#FF83FA |
#FF82AB |
#FF8247 |
||||
#FF7F50 |
#FF7F24 |
#FF7F00 |
#FF7256 |
||||
#FF6EB4 |
#FF6A6A |
#FF69B4 |
#FF6347 |
||||
#FF4500 |
#FF4040 |
#FF3E96 |
#FF34B3 |
||||
#FF3030 |
#FF1493 |
#FF00FF |
#FF0000 |
||||
#FDF5E6 |
#FCFCFC |
#FAFAFA |
#FAFAD2 |
||||
#FAF0E6 |
#FAEBD7 |
#FA8072 |
#F8F8FF |
||||
#F7F7F7 |
#F5FFFA |
#F5F5F5 |
#F5F5DC |
||||
#F5DEB3 |
#F4F4F4 |
#F4A460 |
#F2F2F2 |
||||
#F0FFFF |
#F0FFF0 |
#F0F8FF |
#F0F0F0 |
||||
#F0E68C |
#F08080 |
#EEEEE0 |
#EEEED1 |
||||
#EEEE00 |
#EEE9E9 |
#EEE9BF |
#EEE8CD |
||||
#EEE8AA |
#EEE685 |
#EEE5DE |
#EEE0E5 |
||||
#EEDFCC |
#EEDC82 |
#EED8AE |
#EED5D2 |
||||
#EED5B7 |
#EED2EE |
#EECFA1 |
#EECBAD |
||||
#EEC900 |
#EEC591 |
#EEB4B4 |
#EEB422 |
||||
#EEAEEE |
#EEAD0E |
#EEA9B8 |
#EEA2AD |
||||
#EE9A49 |
#EE9A00 |
#EE9572 |
#EE82EE |
||||
#EE8262 |
#EE7AE9 |
#EE799F |
#EE7942 |
||||
#EE7621 |
#EE7600 |
#EE6AA7 |
#EE6A50 |
||||
#EE6363 |
#EE5C42 |
#EE4000 |
#EE3B3B |
||||
#EE3A8C |
#EE30A7 |
#EE2C2C |
#EE1289 |
||||
#EE00EE |
#EE0000 |
#EDEDED |
#EBEBEB |
||||
#EAEAEA |
#E9967A |
#E8E8E8 |
#E6E6FA |
||||
#E5E5E5 |
#E3E3E3 |
#E0FFFF |
#E0EEEE |
||||
#E0EEE0 |
#E0E0E0 |
#E066FF |
#DEDEDE |
||||
#DEB887 |
#DDA0DD |
#DCDCDC |
#DC143C |
||||
#DBDBDB |
#DB7093 |
#DAA520 |
#DA70D6 |
||||
#D9D9D9 |
#D8BFD8 |
#D6D6D6 |
#D4D4D4 |
||||
#D3D3D3 |
#D2B48C |
#D2691E |
#D1EEEE |
||||
#D1D1D1 |
#D15FEE |
#D02090 |
#CFCFCF |
||||
#CDCDC1 |
#CDCDB4 |
#CDCD00 |
#CDC9C9 |
||||
#CDC9A5 |
#CDC8B1 |
#CDC673 |
#CDC5BF |
||||
#CDC1C5 |
#CDC0B0 |
#CDBE70 |
#CDBA96 |
||||
#CDB7B5 |
#CDB79E |
#CDB5CD |
#CDB38B |
||||
#CDAF95 |
#CDAD00 |
#CDAA7D |
#CD9B9B |
||||
#CD9B1D |
#CD96CD |
#CD950C |
#CD919E |
||||
#CD8C95 |
#CD853F |
#CD8500 |
#CD8162 |
||||
#CD7054 |
#CD69C9 |
#CD6889 |
#CD6839 |
||||
#CD661D |
#CD6600 |
#CD6090 |
#CD5C5C |
||||
#CD5B45 |
#CD5555 |
#CD4F39 |
#CD3700 |
||||
#CD3333 |
#CD3278 |
#CD2990 |
#CD2626 |
||||
#CD1076 |
#CD00CD |
#CD0000 |
#CCCCCC |
||||
#CAFF70 |
#CAE1FF |
#C9C9C9 |
#C7C7C7 |
||||
#C71585 |
#C6E2FF |
#C67171 |
#C5C1AA |
||||
#C4C4C4 |
#C2C2C2 |
#C1FFC1 |
#C1CDCD |
||||
#C1CDC1 |
#C1C1C1 |
#C0FF3E |
#BFEFFF |
||||
#BFBFBF |
#BF3EFF |
#BEBEBE |
#BDBDBD |
||||
#BDB76B |
#BCEE68 |
#BCD2EE |
#BC8F8F |
||||
#BBFFFF |
#BABABA |
#BA55D3 |
#B9D3EE |
||||
#B8B8B8 |
#B8860B |
#B7B7B7 |
#B5B5B5 |
||||
#B4EEB4 |
#B4CDCD |
#B452CD |
#B3EE3A |
||||
#B3B3B3 |
#B2DFEE |
#B23AEE |
#B22222 |
||||
#B0E2FF |
#B0E0E6 |
#B0C4DE |
#B0B0B0 |
||||
#B03060 |
#AEEEEE |
#ADFF2F |
#ADD8E6 |
||||
#ADADAD |
#ABABAB |
#AB82FF |
#AAAAAA |
||||
#A9A9A9 |
#A8A8A8 |
#A6A6A6 |
#A52A2A |
||||
#A4D3EE |
#A3A3A3 |
#A2CD5A |
#A2B5CD |
||||
#A1A1A1 |
#A0522D |
#A020F0 |
#9FB6CD |
||||
#9F79EE |
#9E9E9E |
#9C9C9C |
#9BCD9B |
||||
#9B30FF |
#9AFF9A |
#9ACD32 |
#9AC0CD |
||||
#9A32CD |
#999999 |
#9932CC |
#98FB98 |
||||
#98F5FF |
#97FFFF |
#96CDCD |
#969696 |
||||
#949494 |
#9400D3 |
#9370DB |
#919191 |
||||
#912CEE |
#90EE90 |
#8FBC8F |
#8F8F8F |
||||
#8EE5EE |
#8E8E8E |
#8E8E38 |
#8E388E |
||||
#8DEEEE |
#8DB6CD |
#8C8C8C |
#8B8B83 |
||||
#8B8B7A |
#8B8B00 |
#8B8989 |
#8B8970 |
||||
#8B8878 |
#8B8682 |
#8B864E |
#8B8386 |
||||
#8B8378 |
#8B814C |
#8B7E66 |
#8B7D7B |
||||
#8B7D6B |
#8B7B8B |
#8B795E |
#8B7765 |
||||
#8B7500 |
#8B7355 |
#8B6969 |
#8B6914 |
||||
#8B668B |
#8B6508 |
#8B636C |
#8B5F65 |
||||
#8B5A2B |
#8B5A00 |
#8B5742 |
#8B4C39 |
||||
#8B4789 |
#8B475D |
#8B4726 |
#8B4513 |
||||
#8B4500 |
#8B3E2F |
#8B3A62 |
#8B3A3A |
||||
#8B3626 |
#8B2500 |
#8B2323 |
#8B2252 |
||||
#8B1C62 |
#8B1A1A |
#8B0A50 |
#8B008B |
||||
#8B0000 |
#8A8A8A |
#8A2BE2 |
#8968CD |
||||
#87CEFF |
#87CEFA |
#87CEEB |
#878787 |
||||
#858585 |
#848484 |
#8470FF |
#838B8B |
||||
#838B83 |
#836FFF |
#828282 |
#7FFFD4 |
||||
#7FFF00 |
#7F7F7F |
#7EC0EE |
#7D9EC0 |
||||
#7D7D7D |
#7D26CD |
#7CFC00 |
#7CCD7C |
||||
#7B68EE |
#7AC5CD |
#7A8B8B |
#7A7A7A |
||||
#7A67EE |
#7A378B |
#79CDCD |
#787878 |
||||
#778899 |
#76EEC6 |
#76EE00 |
#757575 |
||||
#737373 |
#71C671 |
#7171C6 |
#708090 |
||||
#707070 |
#6E8B3D |
#6E7B8B |
#6E6E6E |
||||
#6CA6CD |
#6C7B8B |
#6B8E23 |
#6B6B6B |
||||
#6A5ACD |
#698B69 |
#698B22 |
#696969 |
||||
#6959CD |
#68838B |
#68228B |
#66CDAA |
||||
#66CD00 |
#668B8B |
#666666 |
#6495ED |
||||
#63B8FF |
#636363 |
#616161 |
#607B8B |
||||
#5F9EA0 |
#5E5E5E |
#5D478B |
#5CACEE |
||||
#5C5C5C |
#5B5B5B |
#595959 |
#575757 |
||||
#556B2F |
#555555 |
#551A8B |
#54FF9F |
||||
#548B54 |
#545454 |
#53868B |
#528B8B |
||||
#525252 |
#515151 |
#4F94CD |
#4F4F4F |
||||
#4EEE94 |
#4D4D4D |
#4B0082 |
#4A708B |
||||
#4A4A4A |
#48D1CC |
#4876FF |
#483D8B |
||||
#474747 |
#473C8B |
#4682B4 |
#458B74 |
||||
#458B00 |
#454545 |
#43CD80 |
#436EEE |
||||
#424242 |
#4169E1 |
#40E0D0 |
#404040 |
||||
#3D3D3D |
#3CB371 |
#3B3B3B |
#3A5FCD |
||||
#388E8E |
#383838 |
#36648B |
#363636 |
||||
#333333 |
#32CD32 |
#303030 |
#2F4F4F |
||||
#2E8B57 |
#2E2E2E |
#2B2B2B |
#292929 |
||||
#282828 |
#27408B |
#262626 |
#242424 |
||||
#228B22 |
#218868 |
#212121 |
#20B2AA |
||||
#1F1F1F |
#1E90FF |
#1E1E1E |
#1C86EE |
||||
#1C1C1C |
#1A1A1A |
#191970 |
#1874CD |
||||
#171717 |
#141414 |
#121212 |
#104E8B |
||||
#0F0F0F |
#0D0D0D |
#0A0A0A |
#080808 |
||||
#050505 |
#030303 |
#00FFFF |
#00FF7F |
||||
#00FF00 |
#00FA9A |
#00F5FF |
#00EEEE |
||||
#00EE76 |
#00EE00 |
#00E5EE |
#00CED1 |
||||
#00CDCD |
#00CD66 |
#00CD00 |
#00C5CD |
||||
#00BFFF |
#00B2EE |
#009ACD |
#008B8B |
||||
#008B45 |
#008B00 |
#00868B |
#00688B |
||||
#006400 |
#0000FF |
#0000EE |
#0000CD |
||||
#0000AA |
#00008B |
#000080 |
#000000 |