User's Manual

Digital Proofing: Step by step
40
We recommend that you use this option in your color strategies for HP Indigo.
Note
Match inks is the default behavior and is compatible with previous versions of Color Kit/FlexRip
Gamut Mapping
Out of gamut colors can be rendered in different ways. Closest color (classic) will map the
out-of-gamut color to the closest color within the color gamut. This might introduce a hue shift.
Example
When trying to reproduce PMS Purple on an HP Indigo press, the closest color gamut mapping
technique causes the PMS Purple to shift to a blue-ish color.
To avoid PMS Purple from shifting to a blue-ish color in the example above, the ‘constant hue gamut
mapping technique can be used. This technique tries to maintain the hue of the color. The result in the
example above would be that PMS Purple would be reproduced as a much less saturated purple.
Tuning curve
With tuning curves, the final output can be finetuned. We do not recommend to use this feature for
color strategies for HP Indigo.
Example
Proofs turn out to have a red cast. With 'tuning curves' you can pull down the yellow and the magenta
to compensate.