RGB

Der RGB-Code gibt an, wie viele Anteile rot, grün und blau in der jeweiligen Farbe sind.

Für jede Grundfarbe gibt es zwei Stellen.

Die Anteile entstammen dem Hexadezimal-System, also dem Zahlensystem, welches auf der 16 basiert.

0 = 00 16 = 10 32 = 20 48 = 30 64 = 40 80 = 50 96 = 60 112 = 70 128 = 80 144 = 90 160 = A0 176 = B0 192 = C0 208 = D0 224 = E0 240 = F0
1 = 01 17 = 11 33 = 21 49 = 31 65 = 41 81 = 51 97 = 61 113 = 71 129 = 81 145 = 91 161 = A1 177 = B1 193 = C1 209 = D1 225 = E1 241 = F1
2 = 02 18 = 12 34 = 22 50 = 32 66 = 42 82 = 52 98 = 62 114 = 72 130 = 82 146 = 92 162 = A2 178 = B2 194 = C2 210 = D2 226 = E2 242 = F2
3 = 03 19 = 13 35 = 23 51 = 33 67 = 43 83 = 53 99 = 63 115 = 73 131 = 83 147 = 93 163 = A3 179 = B3 195 = C3 211 = D3 227 = E3 243 = F3
4 = 04 20 = 14 36 = 24 52 = 34 68 = 44 84 = 54 100 = 64 116 = 74 132 = 84 148 = 94 164 = A4 180 = B4 196 = C4 212 = D4 228 = E4 244 = F4
5 = 05 21 = 15 37 = 25 53 = 35 69 = 45 85 = 55 101 = 65 117 = 75 133 = 85 149 = 95 165 = A5 181 = B5 197 = C5 213 = D5 229 = E5 245 = F5
6 = 06 22 = 16 38 = 26 54 = 36 70 = 456 86 = 56 102 = 66 118 = 76 134 = 86 150 = 96 166 = A6 182 = B6 198 = C6 214 = D6 230 = E6 246 = F6
7 = 07 23 = 17 39 = 27 55 = 37 71 = 47 87 = 57 103 = 67 119 = 77 135 = 87 151 = 97 167 = A7 183 = B7 199 = C7 215 = D7 231 = E7 247 = F7
8 = 08 24 = 18 40 = 28 56 = 38 72 = 48 88 = 58 104 = 68 120 = 78 136 = 88 152 = 98 168 = A8 184 = B8 200 = C8 216 = D8 232 = E8 248 = F8
9 = 09 25 = 19 41 = 29 57 = 39 73 = 49 89 = 59 105 = 69 121 = 79 137 = 89 153 = 99 169 = A9 185 = B9 201 = C9 217 = D9 233 = E9 249 = F9
10 = 0A 26 = 1A 42 = 2A 58 = 3A 74 = 4A 90 = 5A 106 = 6A 122 = 7A 138 = 8A 154 = 9A 170 = AA 186 = BA 202 = CA 218 = DA 234 = EA 250 = FA
11 = 0B 27 = 1B 43 = 2B 59 = 3B 75 = 4B 91 = 5B 107 = 6B 123 = 7B 139 = 8B 155 = 9B 171 = AB 187 = BB 203 = CB 219 = DB 235 = EB 251 = FB
12 = 0C 28 = 1C 44 = 2C 60 = 3C 76 = 4C 92 = 5C 108 = 6C 124 = 7C 140 = 8C 156 = 9C 172 = AC 188 = BC 204 = CC 220 = DC 236 = EC 252 = FC
13 = 0D 29 = 1D 45 = 2D 61 = 3D 77 = 4D 93 = 5D 109 = 6D 125 = 7D 141 = 8D 157 = 9D 173 = AD 189 = BD 205 = CD 221 = DD 237 = ED 253 = FD
14 = 0E 30 = 1E 46 = 2E 62 = 3E 78 = 4E 94 = 5E 110 = 6E 126 = 7E 142 = 8E 158 = 9E 174 = AE 190 = BE 206 = CE 222 = DE 238 = EE 254 = FE
15 = 0F 31 = 1F 47 = 2F 63 = 3F 79 = 4F 95 = 5F 111 = 6F 127 = 7F 143 = 8F 159 = 9F 175 = AF 191 = BF 207 = CF 223 = DF 239 = EF 255 = FF

16 x 16 = 256

Es gibt demnach 2563 bzw. 166, also 16.777.216 verschiedene Farben, die man mit diesem Code angeben kann.

Additive Farbmischung

Grundfarben am Monitor

rot / grün / blau
red / green / blue

Dem farblosen Schwarz (000000) werden Farben hinzugefügt.

Grafik: Wikipedia
000000 + 00FF00 + 0000FF = 00FFFF
000000 + 0000FF + FF0000 = FF00FF
000000 + FF0000 + 00FF00 = FFFF00
000000 + FF0000 + 00FF00 + 0000FF = FFFFFF

Subtraktive Farbmischung

Grundfarben beim Druck

cyan / magenta / yellow

Dem alle Farben enthaltenden Weiß (FFFFFF) werden Farben entzogen.

Farbpigmente reflektieren das Licht nur spezifisch.
In der Praxis wird schwarz nicht aus einer Mischung der Grundfarben genutzt,
sondern eine eigene Farbe mit schwarzen Pigmenten.

Grafik: Negativ von oben
FFFFFF + FF00FF + FFFF00 = FF0000
FFFFFF + FFFF00 + 00FFFF = 00FF00
FFFFFF + 00FFFF + FF00FF = 0000FF
FFFFFF + 00FFFF + FF00FF + FFFF00 = 000000
Nachfolgend einige Beispiele, wobei ich immer 17er-, 51er- oder 85er-Schritte genommen habe, was das Ganze stark vereinfacht.
rot grün blau weiß cyan magenta yellow
000000 000000 000000 000000 000000 000000 000000
110000 001100 000011 111111 001111 110011 111100
220000 002200 000022 222222 002222 220022 222200
330000 003300 000033 333333 003333 330033 333300
440000 004400 000044 444444 004444 440044 444400
550000 005500 000055 555555 005555 550055 555500
660000 006600 000066 666666 006666 660066 666600
770000 007700 000077 777777 007777 770077 777700
880000 008800 000088 888888 008888 880088 888800
990000 009900 000099 999999 009999 990099 999900
AA0000 00AA00 0000AA AAAAAA 00AAAA AA00AA AAAA00
BB0000 00BB00 0000BB BBBBBB 00BBBB BB00BB BBBB00
CC0000 00CC00 0000CC CCCCCC 00CCCC CC00CC CCCC00
DD0000 00DD00 0000DD DDDDDD 00DDDD DD00DD DDDD00
EE0000 00EE00 0000EE EEEEEE 00EEEE EE00EE EEEE00
FF0000 00FF00 0000FF FFFFFF 00FFFF FF00FF FFFF00
FF1111 11FF11 1111FF FFFFFF 11FFFF FF11FF FFFF11
FF2222 22FF22 2222FF FFFFFF 22FFFF FF22FF FFFF22
FF3333 33FF33 3333FF FFFFFF 33FFFF FF33FF FFFF33
FF4444 44FF44 4444FF FFFFFF 44FFFF FF44FF FFFF44
FF5555 55FF55 5555FF FFFFFF 55FFFF FF55FF FFFF55
FF6666 66FF66 6666FF FFFFFF 66FFFF FF66FF FFFF66
FF7777 77FF77 7777FF FFFFFF 77FFFF FF77FF FFFF77
FF8888 88FF88 8888FF FFFFFF 88FFFF FF88FF FFFF88
FF9999 99FF99 9999FF FFFFFF 99FFFF FF99FF FFFF99
FFAAAA AAFFAA AAAAFF FFFFFF AAFFFF FFAAFF FFFFAA
FFBBBB BBFFBB BBBBFF FFFFFF BBFFFF FFBBFF FFFFBB
FFCCCC CCFFCC CCCCFF FFFFFF CCFFFF FFCCFF FFFFCC
FFDDDD DDFFDD DDDDFF FFFFFF DDFFFF FFDDFF FFFFDD
FFEEEE EEFFEE EEEEFF FFFFFF EEFFFF FFEEFF FFFFEE
FFFFFF FFFFFF FFFFFF FFFFFF FFFFFF FFFFFF FFFFFF

43, also 84 Farben

000000 005500 00AA00 00FF00
550000 555500 55AA00 55FF00
AA0000 AA5500 AAAA00 AAFF00
FF0000 FF5500 FFAA00 FFFF00
000055 005555 00AA55 00FF55
550055 555555 55AA55 55FF55
AA0055 AA5555 AAAA55 AAFF55
FF0055 FF5555 FFAA55 FFFF55
0000AA 0055AA 00AAAA 00FFAA
5500AA 5555AA 55AAAA 55FFAA
AA00AA AA55AA AAAAAA AAFFAA
FF00AA FF55AA FFAAAA FFFFAA
0000FF 0055FF 00AAFF 00FFFF
5500FF 5555FF 55AAFF 55FFFF
AA00FF AA55FF AAAAFF AAFFFF
FF00FF FF55FF FFAAFF FFFFFF

63, also 216 "websichere" Farben

000000 003300 006600 009900 00CC00 00FF00
330000 333300 336600 339900 33CC00 33FF00
660000 663300 666600 669900 66CC00 66FF00
990000 993300 996600 999900 99CC00 99FF00
CC0000 CC3300 CC6600 CC9900 CCCC00 CCFF00
FF0000 FF3300 FF6600 FF9900 FFCC00 FFFF00
000033 003333 006633 009933 00CC33 00FF33
330033 333333 336633 339933 33CC33 33FF33
660033 663333 666633 669933 66CC33 66FF33
990033 993333 996633 999933 99CC33 99FF33
CC0033 CC3333 CC6633 CC9933 CCCC33 CCFF33
FF0033 FF3333 FF6633 FF9933 FFCC33 FFFF33
000066 003366 006666 009966 00CC66 00FF66
330066 333366 336666 339966 33CC66 33FF66
660066 663366 666666 669966 66CC66 66FF66
990066 993366 996666 999966 99CC66 99FF66
CC0066 CC3366 CC6666 CC9966 CCCC66 CCFF66
FF0066 FF3366 FF6666 FF9966 FFCC66 FFFF66
000099 003399 006699 009999 00CC99 00FF99
330099 333399 336699 339999 33CC99 33FF99
660099 663399 666699 669999 66CC99 66FF99
990099 993399 996699 999999 99CC99 99FF99
CC0099 CC3399 CC6699 CC9999 CCCC99 CCFF99
FF0099 FF3399 FF6699 FF9999 FFCC99 FFFF99
0000CC 0033CC 0066CC 0099CC 00CCCC 00FFCC
3300CC 3333CC 3366CC 3399CC 33CCCC 33FFCC
6600CC 6633CC 6666CC 6699CC 66CCCC 66FFCC
9900CC 9933CC 9966CC 9999CC 99CCCC 99FFCC
CC00CC CC33CC CC66CC CC99CC CCCCCC CCFFCC
FF00CC FF33CC FF66CC FF99CC FFCCCC FFFFCC
0000FF 0033FF 0066FF 0099FF 00CCFF 00FFFF
3300FF 3333FF 3366FF 3399FF 33CCFF 33FFFF
6600FF 6633FF 6666FF 6699FF 66CCFF 66FFFF
9900FF 9933FF 9966FF 9999FF 99CCFF 99FFFF
CC00FF CC33FF CC66FF CC99FF CCCCFF CCFFFF
FF00FF FF33FF FF66FF FF99FF FFCCFF FFFFFF
000000 111100 222200 333300 444400 555500 666600 777700 888800 999900 AAAA00 BBBB00 CCCC00 DDDD00 EEEE00 FFFF00
000011 111111 222211 333311 444411 555511 666611 777711 888811 999911 AAAA11 BBBB11 CCCC11 DDDD11 EEEE11 FFFF11
000022 111122 222222 333322 444422 555522 666622 777722 888822 999922 AAAA22 BBBB22 CCCC22 DDDD22 EEEE22 FFFF22
000033 111133 222233 333333 444433 555533 666633 777733 888833 999933 AAAA33 BBBB33 CCCC33 DDDD33 EEEE33 FFFF33
000044 111144 222244 333344 444444 555544 666644 777744 888844 999944 AAAA44 BBBB44 CCCC44 DDDD44 EEEE44 FFFF44
000055 111155 222255 333355 444455 555555 666655 777755 888855 999955 AAAA55 BBBB55 CCCC55 DDDD55 EEEE55 FFFF55
000066 111166 222266 333366 444466 555566 666666 777766 888866 999966 AAAA66 BBBB66 CCCC66 DDDD66 EEEE66 FFFF66
000077 111177 222277 333377 444477 555577 666677 777777 888877 999977 AAAA77 BBBB77 CCCC77 DDDD77 EEEE77 FFFF77
000088 111188 222288 333388 444488 555588 666688 777788 888888 999988 AAAA88 BBBB88 CCCC88 DDDD88 EEEE88 FFFF88
000099 111199 222299 333399 444499 555599 666699 777799 888899 999999 AAAA99 BBBB99 CCCC99 DDDD99 EEEE99 FFFF99
0000AA 1111AA 2222AA 3333AA 4444AA 5555AA 6666AA 7777AA 8888AA 9999AA AAAAAA BBBBAA CCCCAA DDDDAA EEEEAA FFFFAA
0000BB 1111BB 2222BB 3333BB 4444BB 5555BB 6666BB 7777BB 8888BB 9999BB AAAABB BBBBBB CCCCBB DDDDBB EEEEBB FFFFBB
0000CC 1111CC 2222CC 3333CC 4444CC 5555CC 6666CC 7777CC 8888CC 9999CC AAAACC BBBBCC CCCCCC DDDDCC EEEECC FFFFCC
0000DD 1111DD 2222DD 3333DD 4444DD 5555DD 6666DD 7777DD 8888DD 9999DD AAAADD BBBBDD CCCCDD DDDDDD EEEEDD FFFFDD
0000EE 1111EE 2222EE 3333EE 4444EE 5555EE 6666EE 7777EE 8888EE 9999EE AAAAEE BBBBEE CCCCEE DDDDEE EEEEEE FFFFEE
0000FF 1111FF 2222FF 3333FF 4444FF 5555FF 6666FF 7777FF 8888FF 9999FF AAAAFF BBBBFF CCCCFF DDDDFF EEEEFF FFFFFF
000000 110011 220022 330033 440044 550055 660066 770077 880088 990099 AA00AA BB00BB CC00CC DD00DD EE00EE FF00FF
001100 111111 221122 331133 441144 551155 661166 771177 881188 991199 AA11AA BB11BB CC11CC DD11DD EE11EE FF11FF
002200 112211 222222 332233 442244 552255 662266 772277 882288 992299 AA22AA BB22BB CC22CC DD22DD EE22EE FF22FF
003300 113311 223322 333333 443344 553355 663366 773377 883388 993399 AA33AA BB33BB CC33CC DD33DD EE33EE FF33FF
004400 114411 224422 334433 444444 554455 664466 774477 884488 994499 AA44AA BB44BB CC44CC DD44DD EE44EE FF44FF
005500 115511 225522 335533 445544 555555 665566 775577 885588 995599 AA55AA BB55BB CC55CC DD55DD EE55EE FF55FF
006600 116611 226622 336633 446644 556655 666666 776677 886688 996699 AA66AA BB66BB CC66CC DD66DD EE66EE FF66FF
007700 117711 227722 337733 447744 557755 667766 777777 887788 997799 AA77AA BB77BB CC77CC DD77DD EE77EE FF77FF
008800 118811 228822 338833 448844 558855 668866 778877 888888 998899 AA88AA BB88BB CC88CC DD88DD EE88EE FF88FF
009900 119911 229922 339933 449944 559955 669966 779977 889988 999999 AA99AA BB99BB CC99CC DD99DD EE99EE FF99FF
00AA00 11AA11 22AA22 33AA33 44AA44 55AA55 66AA66 77AA77 88AA88 99AA99 AAAAAA BBAABB CCAACC DDAADD EEAAEE FFAAFF
00BB00 11BB11 22BB22 33BB33 44BB44 55BB55 66BB66 77BB77 88BB88 99BB99 AABBAA BBBBBB CCBBCC DDBBDD EEBBEE FFBBFF
00CC00 11CC11 22CC22 33CC33 44CC44 55CC55 66CC66 77CC77 88CC88 99CC99 AACCAA BBCCBB CCCCCC DDCCDD EECCEE FFCCFF
00DD00 11DD11 22DD22 33DD33 44DD44 55DD55 66DD66 77DD77 88DD88 99DD99 AADDAA BBDDBB CCDDCC DDDDDD EEDDEE FFDDFF
00EE00 11EE11 22EE22 33EE33 44EE44 55EE55 66EE66 77EE77 88EE88 99EE99 AAEEAA BBEEBB CCEECC DDEEDD EEEEEE FFEEFF
00FF00 11FF11 22FF22 33FF33 44FF44 55FF55 66FF66 77FF77 88FF88 99FF99 AAFFAA BBFFBB CCFFCC DDFFDD EEFFEE FFFFFF
000000 001111 002222 003333 004444 005555 006666 007777 008888 009999 00AAAA 00BBBB 00CCCC 00DDDD 00EEEE 00FFFF
110000 111111 112222 113333 114444 115555 116666 117777 118888 119999 11AAAA 11BBBB 11CCCC 11DDDD 11EEEE 11FFFF
220000 221111 222222 223333 224444 225555 226666 227777 228888 229999 22AAAA 22BBBB 22CCCC 22DDDD 22EEEE 22FFFF
330000 331111 332222 333333 334444 335555 336666 337777 338888 339999 33AAAA 33BBBB 33CCCC 33DDDD 33EEEE 33FFFF
440000 441111 442222 443333 444444 445555 446666 447777 448888 449999 44AAAA 44BBBB 44CCCC 44DDDD 44EEEE 44FFFF
550000 551111 552222 553333 554444 555555 556666 557777 558888 559999 55AAAA 55BBBB 55CCCC 55DDDD 55EEEE 55FFFF
660000 661111 662222 663333 664444 665555 666666 667777 668888 669999 66AAAA 66BBBB 66CCCC 66DDDD 66EEEE 66FFFF
770000 771111 772222 773333 774444 775555 776666 777777 778888 779999 77AAAA 77BBBB 77CCCC 77DDDD 77EEEE 77FFFF
880000 881111 882222 883333 884444 885555 886666 887777 888888 889999 88AAAA 88BBBB 88CCCC 88DDDD 88EEEE 88FFFF
990000 991111 992222 993333 994444 995555 996666 997777 998888 999999 99AAAA 99BBBB 99CCCC 99DDDD 99EEEE 99FFFF
AA0000 AA1111 AA2222 AA3333 AA4444 AA5555 AA6666 AA7777 AA8888 AA9999 AAAAAA AABBBB AACCCC AADDDD AAEEEE AAFFFF
BB0000 BB1111 BB2222 BB3333 BB4444 BB5555 BB6666 BB7777 BB8888 BB9999 BBAAAA BBBBBB BBCCCC BBDDDD BBEEEE BBFFFF
CC0000 CC1111 CC2222 CC3333 CC4444 CC5555 CC6666 CC7777 CC8888 CC9999 CCAAAA CCBBBB CCCCCC CCDDDD CCEEEE CCFFFF
DD0000 DD1111 DD2222 DD3333 DD4444 DD5555 DD6666 DD7777 DD8888 DD9999 DDAAAA DDBBBB DDCCCC DDDDDD DDEEEE DDFFFF
EE0000 EE1111 EE2222 EE3333 EE4444 EE5555 EE6666 EE7777 EE8888 EE9999 EEAAAA EEBBBB EECCCC EEDDDD EEEEEE EEFFFF
FF0000 FF1111 FF2222 FF3333 FF4444 FF5555 FF6666 FF7777 FF8888 FF9999 FFAAAA FFBBBB FFCCCC FFDDDD FFEEEE FFFFFF