Hi all, with the following file I tested the color conversion of context. I get the same CMYK-values in the output pdf file using different color profiles. A friend of mine can test the color values of PDF with a special software. My guess: the profiles are not used during pdf generation. You can test this by commenting/uncommenting the other profile. I created the files with context --mode=print example.tex My context version is mtx-context | ConTeXt Process Management 1.02 mtx-context | current version: 2018.08.30 18:41 Is this the correct way of producing cmyk-pdfs? I am missing the declaration of the RGB color profile. When doing color management in Scribus I define two profiles: one for RGB and one for CMYK. AFAIK you need both to convert rgb to cmyk. Any hints? juh --- example.tex --- \definecolor [hs-logoblau] [r=0.000, g=0.314, b=0.580] \definecolor [hs-dunkelblau] [r=0.258, g=0.474, b=0.737] \definecolor [hs-hellblau] [r=0.6, g=0.737, b=0.858] \definecolor [hs-orange] [r=0.866, g=0.286, b=0.003] \startnotmode[print] \setupcolors[cmyk=no,rgb=yes] \stopnotmode \startmode[print] \setupcolors[cmyk=yes,rgb=no] \setupbackend[ format=PDF/X-1a:2003, % intent={ISO Coated v2 300\letterpercent\space (ECI)}, intent={SWOP2006_Coated3v2.icc}, ] \stopmode \setuppapersize [A4] [A4] \starttext \blackrule[width=3cm,height=1cm,depth=0pt,color=hs-orange] HS Orange r=0.866, g=0.286, b=0.003 \blank \blackrule[width=3cm,height=1cm,depth=0pt,color=hs-logoblau] HS Logoblau r=0.000, g=0.314, b=0.580 \blank \blackrule[width=3cm,height=1cm,depth=0pt,color=hs-dunkelblau] HS Dunkelblau r=0.258, g=0.474, b=0.737 \blank \blackrule[width=3cm,height=1cm,depth=0pt,color=hs-hellblau] HS Hellblau r=0.6, g=0.737, b=0.858 \stoptext