On 30.09.18 17:16, Henning Hraban Ramm wrote: > > Hi juh, > > you can define colors in several color models at once; CMYK makes most sense > for professional printing. > > e.g. \definecolor[CompanyBlue][r=0,g=0,b=1,c=1,m=1,y=0,k=0] > > and see https://wiki.contextgarden.net/Command/setupcolors > (I would activate rgb or cmyk colors via modes, if you produce different > media)
I don't know how to enable this via modes. > CMYK colors in SVG are difficult (I needed them in 2005, nowadays there’s a > hardly supported standard for icc profile based colors). > e.g. > https://stackoverflow.com/questions/3405689/svg-image-with-cmyk-colours-is-it-possible > https://www.w3.org/TR/SVGColor12/#icc-colors > > Something about color profile handling in ConTeXt: > https://wiki.contextgarden.net/PDFX > > Now you must decide if you want to go the PDF/X-1a route (device dependent > CYMK values) or PDF/X-3 (profiled colors). How can I test, what colors are used in the resulting PDF? Currently I pick the colors with a tool in Gimp to see what colors come up. If I look at the colors this way the RGB values of the included svg are always the original values defined by the file. All other values are not the values I defined in the ConTeXt files. I think this is due to the cmyk conversion of my screen. \setupbackend[ format=PDF/X-3, intent=ISO Coated v2 (ECI), ] I tried with this for example. Anyway. Wouldn't it be better to produce a RGB-PDF and let the ripper of the print shop do the conversion? At least I can produce a RGB-PDF where all colors are defined in the same manner. juh ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___________________________________________________________________________________
