Iontráil leibhéil dathanna dearga, glasa agus gorma (0..255) agus brúigh an cnaipe Tiontaigh :
Roinntear na luachanna R, G, B faoi 255 chun an raon a athrú ó 0..255 go 0..1:
R '= R / 255
G '= G / 255
B '= B / 255
Ríomhtar dath na heochrach dubh (K) ó na dathanna dearga (R '), glas (G') agus gorm (B '):
K = 1-uas ( R ', G ', B ')
Ríomhtar dath na cian (C) ó na dathanna dearga (R ') agus dubh (K):
C = (1- R '- K ) / (1- K )
Ríomhtar an dath magenta (M) ó na dathanna glasa (G ') agus dubh (K):
M = (1- G '- K ) / (1- K )
Ríomhtar an dath buí (Y) ó na dathanna gorm (B ') agus dubh (K):
Y = (1- B '- K ) / (1- K )
Dath | Dath ainm |
(R, G, B) | Heics | (C, M, Y, K) |
---|---|---|---|---|
Dubh | (0,0,0) | # 000000 | (0,0,0,1) | |
Bán | (255,255,255) | #FFFFFF | (0,0,0,0) | |
Dearg | (255,0,0) | # FF0000 | (0,1,1,0) | |
Glas | (0,255,0) | # 00FF00 | (1,0,1,0) | |
Gorm | (0,0,255) | # 0000FF | (1,1,0,0) | |
Buí | (255,255,0) | # FFFF00 | (0,0,1,0) | |
Cian | (0,255,255) | # 00FFFF | (1,0,0,0) | |
Magenta | (255,0,255) | # FF00FF | (0,1,0,0) |
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