Adobe InDesign CC 2015 - Manual (Page 496)

491
Color
Last updated 6/6/2015
Inks, separations, and screen frequency
Mixing inks
Using colors from imported graphics
Using colors from imported graphics
InDesign provides various ways for you to sample and redefine colors from the graphics you import into your
document. Spot colors from placed PDF or EPS files and spot-color channels in Adobe Photoshop (PSD) and TIFF files
appear as spot colors in the Swatches panel. You can apply these colors to objects in your document or convert them to
process colors; however, you cannot redefine the color values or delete the imported swatches. If you delete the placed
graphic, the colors remain but are converted to native InDesign colors, which can then be edited or deleted.
Using the Eyedropper tool to sample colors
You can use the Eyedropper tool to add colors from imported graphics to your document, or to apply them to
objects in your document. This is useful for coordinating layout colors with images.
For best results with color separations, you may want to make sure that color names, types (such as spot and process),
and models (such as RGB and CMYK) of the colors sampled in InDesign are consistent with the color definitions in
the imported graphics. If you’re not sure about the best settings to use, consult with your prepress service provider.
Working with spot-color channels in an Adobe Photoshop (PSD) file
When you place a native Photoshop file (PSD) or TIFF file in InDesign, any spot-color channels the file contains appear
in the Swatches panel as spot-color inks. You can select and apply these swatches to other objects in your document; to
delete these swatches, however, you must first delete the placed image.
If you import a file that has a spot-color channel with the same name as a spot color in your document, but with
different color values, you will be asked whether you want to use the color values in the placed file or the ones in the
document.
Working with colors from EPS or PDF files
When you place a PDF file, EPS graphic, or Adobe Illustrator (.AI) file, names of spot colors used in the graphic are
added to the Swatches panel in your document, so that you can be aware that they can cause additional printing costs
later, and also so that you can use the spot colors in your document.
If the graphic you are importing contains a spot color with the same name as a spot color in your document but different
color values, the color values in the document are used.