I stumpled upon a ambiguous color definition in my automatically
I.e. the color is defined in CMYK mode as 100% magenta and in RGB as
In the PDF the color is shown as black, according to Acrobat's
preflight defined as RGB 0/0/0; CMYK separation depends on the
Generic CMYK: 76/71/65/81
ISO Coated FOGRA27: 86/85/79/100
Euroscale Coated: 95/83/82/90
(I didn't expect the Euroscale Coated profiles to differ that much!)
If I say \setupcolors[rgb=no], I get CMYK 100/100/100/0.
This is not a good separation algorithm - GCR or UCR would be nice,
but at least RGB 0/0/0 should render as CMYK 0/0/0/100.
(Perhaps you could include something like littleCMS in LuaTeX and even
deal with images?)
It doesn't change if I define in different order, like
I get magenta only if I leave out the RGB values.
It seems that in ConTeXt the RGB definition always takes precedence?
Is this intended?
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