Select the object or objects you want to change. Click the Fill or Stroke box in the Swatches panel or the Toolbox. (If the Gradient Fill box is not visible, choose Show Options in the Gradient panel menu.) To open the Gradient panel, choose Window > Color > Gradient, or double-click the Gradient tool in the Toolbox.
Here's a real example: Drew a box in Illustrator and chose the color #f8f1e0 / 2% 3% 12% 0%. Drew a box in InDesign, C+P'd the color values into it, and it DID change to the correct color for an instant. Clicked okay. Clicked back into the color picker and the color is now #f8f1e1 / 2% 3% 11% 0%. If it's relevant, it seems the color will change
If you want to color manage the conversion of an HTML hex color to the closest FOGRA39 CMYK version of the color (#FF5050 is out-of-gamut to most CMYK spaces), set the InDesign source RGB profile to sRGB (modern web browsers display HTML hex values as sRGB) and the destination CMYK profile to FOGRA39 via Edit>Assign Profiles.
InDesign indicates with the yellow sign that my choosen RGB color cannot be reproduced in the CMYK color mode for print. My RGB color #ee0000 according to this article: is the red shade that has the highest contrast with both black and white. But the color that InDesign chooses to replace it: #ed1
Choose Preflight. Click the Single Fixups button. In the Convert Colors fixups, choose Convert Registration Color to CMYK Black Only. Click Analyze and Fix. You’ll be prompted to Save the PDF. Before applying the fixup, printer’s marks are 4-color. After applying the fixup, printer’s marks are pure black. in InDesign , Prepress by James
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how to change color from cmyk to rgb in indesign
