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I wouldn't do this manually I would do it with something like Ghostscript or PDFtk Ghostscript gs -sDEVICE=pdfwrite -dBATCH -dNOPAUSE -dCompatibilityLevel=1.4 -dColorConversionStrategy=/sRGB -dProcessColorModel=/DeviceRGB -dUseCIEColor=true -sOutputFile=output.pdf input.ps The above was taken from this answer: How to convert PDF from CMYK to ...


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If you are exporting the pdf from InDesign, you can do it when you export. First, open your .indd file in InDesign. Go to the file menu and select export. Once you have selected where you want your pdf to be saved, a dialog box entitled Export Adobe PDF should open. On the left hand side, there is a series of menus. Under Output, you can select Color ...


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Your observation is correct. The lightness (the human perception of brightness) of green is larger than the lightness of red. In your example, when you shift the sRGB value 214,73,55 to 55,214,73 (i.e. you rotate the hue from 7° to 127°), the brightness remains constant at 84 % but the lightness is increased. The original sRGB value 214,73,55 corresponds to ...


5

Basically, you want to use a different model. Photoshop reports your red RGB(214,73,55) as HSB(7,74,84) and Lab(52,55,42). Scott's comment is probably referencing the "Hue axis" of the HSB color picker. Lab is supposed to model human perception. There are multiple versions, but for the photoshop color picker, ranges are L=0-100; a & b are -128-127 ...



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