[texhax] CMYK color v. RGB

Lars Madsen daleif at imf.au.dk
Fri Dec 19 14:03:19 CET 2008

Niall Mansfield wrote:
> We've just had a book printed, and there are a few color problems:
> more or less consistently, some blues come out looking a little
> too green, and others look purple.  The printing company say this is probably due to
> the RGB -> CMYK color conversion, and say that we should
> ensure images are in CMYK format rather than RGB before
> they are embedded in the PDF.
> We're using LaTeX, Xfig, GNUplot, Metapost, and all the usual
> tools on Linux.  We produce the book as PostScript, and then
> ps2pdf that, to send to the printers.
> I don't think it's possible for us to use CMYK.  Is it?
> Does anyone else have experience of similar problems?
> 	Thanks,
> 	Niall
> ps: we had advance review copies printed digitally.  They were
>      fine; only the litho copies were weird.  The printers say
>      it wasn't a problem with their inking of the litho machine,
>      and insofar as I understand what they are talking about, I
>      believe them.

have you had a look at xcolor? Though you might want to use pdflatex 
directly, not sure if postscript actually support cmyk.



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