Input the levels for the red, green, and blue colors (0 to 255), and then click the "Convert" button.
Enter red, green and blue color levels (0..255) and press the Convert button:
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 and CMYK represent colors differently, and they have different gamuts (ranges of colors they can display). Some vibrant RGB colors may not have a direct CMYK equivalent, leading to slight variations in appearance when printed. It's essential to manage color expectations and perform test prints for accurate results.