Only a slight move is needed to give your image some color. 4. Convert to CMYK. Blurb’s plug-in for Adobe InDesign and Blurb’s PDF Uploader work best with CMYK images. If your images are already in CMYK and you're done editing them, you're all set. Put your CMYK images directly into InDesign or whatever program you'll use to create your PDF.
Step 2. Go to the “File” menu on the top and select Save As. Then click the JPEG picture option from the menu. Step 3. Choose the file destination to save the converted files, type in the file name and click the Save button to convert the TIFF file to a JPEG format. Section 3.codemankino: And that would give you exactly the same result as if you converted the layered file from RGB to CMYK in the first place. The most vibrant blue (like a sky blue) in the CMYK color space will be 100% cyan (100C) and about 70% magenta (70M). Any amount of the contaminating colors (in this case, yellow and black) will reduce the vibrancy. Yellow will "dirty" it up, and black will darken it. Of course, a lighter blue will have over-all lower ink percentages.
If you are experiencing a color change or color shift after exporting and saving in Photoshop, then you need to adjust the color settings and color profile.
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