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Converting CMYK to RGB

September 7th, 2009 Leave a comment Go to comments
Representation of CMYK (Values discussed here are in the range [0, 1]) In CMYK, black (K) is a minimum amount of black ink for all three CMY. The CMY components are then scaled inside the remaining range:
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C' = (1-K)*C;
M' = (1-K)*M;
Y' = (1-K)*Y;

Ink Contribution (CMKY)

Cyan-Black Contribution

Result:

Magenta-Black Contribution

Result:

Yellow-Black Contribution

Result:
Once we scale the cyan, magenta and yellow components using the black component, we obtain a color on the CMY (no K) model.

Ink Contribution (CMY - no K)

These CMY are negatives of RGB, as in:
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R = 1.0 - C;
G = 1.0 - M;
B = 1.0 - Y;
The final color:
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