RGB para CMYK color conversion

Digite os níveis de cor vermelha, verde e azul (0..255) e pressione o Converterer botão:

RGB para CMYK conversion formula

Os valores R,G,B são divididos por 255 para alterar o intervalo de 0..255 para 0..1:

R' = R/255

G' = G/255

B' = B/255

A cor preta (K) é calculada a partir das cores vermelha (R'), verde (G') e azul (B'):

K = 1-max(R', G', B')

The cyan color (C) is calculated from the red (R') and black (K) colors:

C = (1-R'-K) / (1-K)

The magenta color (M) is calculated from the green (G') and black (K) colors:

M = (1-G'-K) / (1-K)

The yellow color (Y) is calculated from the blue (B') and black (K) colors:

Y = (1-B'-K) / (1-K)

Cor nome	(R,G,B)	Hex	(C,M,Y,K)
Preto	(0,0,0)	#000000	(0,0,0,1)
Branco	(255,255,255)	#FFFFFF	(0,0,0,0)
Vermelho	(255,0,0)	#FF0000	(0,1,1,0)
Verde	(0,255,0)	#00FF00	(1,0,1,0)
Azul	(0,0,255)	#0000FF	(1,1,0,0)
Amarelo	(255,255,0)	#FFFF00	(0,0,1,0)
Ciano	(0,255,255)	#00FFFF	(1,0,0,0)
Magenta	(255,0,255)	#FF00FF	(0,1,0,0)