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I don't mean to sound pedantic, but you might want to read into the very basics of RGB vs. CMYK, mainly the difference in gamut. #31C68B is an RGB colour that is outside of CMYK's gamut, which means that it cannot be reproduced in that colour space. This is actually indicated in Photoshop's colour picker when you select the colour: What you'll want to ...


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Use ghostscript, its the most obvious OSS tool for the job. Here's a sample for windows usage from stackoverflow [1]: gswin32.exe ^ -o -o c:/path/to/output-cmyk.pdf ^ -sDEVICE=pdfwrite ^ -dUseCIEColor ^ -sProcessColorModel=DeviceCMYK ^ -sColorConversionStrategy=CMYK ^ -sColorConversionStrategyForImages=CMYK ^ input-rgb.pdf ...


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The colors in the color panel are just mixers. They don't set a color to RBG or CMYK. If you're in a CMYK document in File>DocumentColorMode -- You can just export the document to a pdf for print and boom, it's in CMYK. In your pdf export settings you can also confirm this by going to Output and selecting Color Conversion > Convert to Destination. Then make ...


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a better workflow Instead of going to the trouble of adding a rich black to the logo, make it transparent where it should be black and save in a transparency-supporting file format eg. PSD. use acrobat to review Instead of relying in the InDesign preview, output to PDF and open the Output Preview window (Tools > Print Production > ...). There you will ...


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That CMYK code for black is known as True black and is not that black on screen, but different appearances could be caused by the different colour profiles in PS or ID, and of course .pdf export settings, even though you used CMYK. Also, about looking different from different angles.... Is your monitor properly calibrated? Does your monitor have that wide ...



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