RGB to CMYK color conversion

Enter red, green and blue color levels (0..255) and press the Convert button:

Red color (R):
Green color (G):
Blue color (B):
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Cyan color (C):	%
Magenta color (M):	%
Yellow color (Y):	%
Black key color (K):	%
Hex:
Color preview:

CMYK to RGB conversion ►

RGB to CMYK transformation approach

The R,G,B values are remoted with the aid of 255 to exchange the attain from 0..255 to zero..1:

R' = R/255

G' = G/255

B' = B/255

The darkish key (K) variety is determined from the red (R'), inexperienced (G') and blue (B') shades:

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

The cyan tone (C) is decided from the crimson (R') and dark (K) shades:

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

The purple tone (M) is determined from the inexperienced (G') and dark (K) hues:

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

The yellow tone (Y) is decided from the blue (B') and darkish (K) hues:

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

RGB to CMYK desk

Color	Color name	(R,G,B)	Hex	(C,M,Y,K)
	Black	(0,0,0)	#000000	(0,0,0,1)
	White	(255,255,255)	#FFFFFF	(0,0,0,0)
	Red	(255,0,0)	#FF0000	(0,1,1,0)
	Green	(0,255,0)	#00FF00	(1,0,1,0)
	Blue	(0,0,255)	#0000FF	(1,1,0,0)
	Yellow	(255,255,0)	#FFFF00	(0,0,1,0)
	Cyan	(0,255,255)	#00FFFF	(1,0,0,0)
	Magenta	(255,0,255)	#FF00FF	(0,1,0,0)

 

CMYK to RGB conversion ►