RGB to CMYK Color Conversion

Our user-friendly tool allows you to easily convert RGB colors to CMYK colors with just a few clicks. Simply enter your RGB values and our tool will provide you with the corresponding CMYK values in seconds.

Enter RGB color levels (0 to 255) and press the Convert button:

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

CMYK to RGB conversion ►

RGB to CMYK Conversion Formula

The R,G,B values are divided by 255 to change the range from 0..255 to 0..1:

R‘ = R/255

G‘ = G/255

B‘ = B/255

The black key (K) color is calculated from the red (R’), green (G’) and blue (B’) colors:

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)

RGB to CMYK Table

ColorColor

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)
Conversion Calculator
Logo