[Scribus] color gamut
Thu Apr 27 23:41:22 CEST 2006
On Thursday 27 April 2006 10:49, Florence Gaillaguet wrote:
> I have chosen 5 colors in a Pantone booklet, called my printer to
> get the CMYK values and created them with Scribus. A red triangle
> has appeared in the color menu : does this mean that the color are
> out of gamut ?
Possibly. Possibly not. These are a *warning*. The ICC specs do not
define exactly how this works, so it is a 'best guess' based on the
printing profile. The other variable is paper density and brightness.
High gloss paper often has better gamut, as it can absorb more ink
> What are the consequences of that ?
If you are printing CMYK, the ink combo might be outside of a given
profile's gamut and depending on the rendering choice, there could be
what we call gamut compression, where two close but not matching
shades are merged into one.
When printing images, you could lose detail in shadows or certain
shades may not have the same vividness or deepness.
> Is it just a problem with my color management settings (ECI rvg &
> Iso Coated) ?
None at all. Just make sure Scribus is using a monitor profile for
your monitor, not a generic RGB one.
> These are the CMYK :
> Dark red : 0 95 100 2
> Dark green : 34 0 81 71
> yellow : 0 18 100 0
> orange 0 42 100 7
Plugging these numbers in with Fogra-27 coated shows no warnings, but
I think the getting the exact deep green and *exact* shade of red
might be tricky.
Using similar shades on a project coated stock did not pose a problem
and I was very pleased with the results. The deep green was well
saturated and the red was really really close.
> Thank you for your help
Hope that helps,
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