Colors that change from one page to another
kenmaclord
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Hello,
I have a strange color display issue on InDesign CC 2015 (the same issue occurs on 2019). In a document, I have text that appears one way on one page and differently on the next page. These are exactly the same two blocks. When I move the one from page 1 to page 2, it changes color and vice versa. It's as if each page has its own color space or its own overprint display.
It seems to me that these are global settings applicable to the entire document, right?
Does anyone have any ideas?
Thank you in advance.
I am attaching a screenshot
Configuration: Macintosh / Chrome 78.0.3904.108
I have a strange color display issue on InDesign CC 2015 (the same issue occurs on 2019). In a document, I have text that appears one way on one page and differently on the next page. These are exactly the same two blocks. When I move the one from page 1 to page 2, it changes color and vice versa. It's as if each page has its own color space or its own overprint display.
It seems to me that these are global settings applicable to the entire document, right?
Does anyone have any ideas?
Thank you in advance.
I am attaching a screenshot
Configuration: Macintosh / Chrome 78.0.3904.108
1. Since InDesign is a print-specific software, the final color rendering in this software is done according to the CMYK mode intended for print rather than the RGB mode for screens.
2. When an object has transparency, InDesign must calculate the visual rendering of the transparent object with those underneath it.
3. To calculate this transparency rendering, it computes what is called flattening, which simulates the final rendering of the page.
4. The final rendering for InDesign will therefore be in CMYK (as it is intended for printing).
5. On pages with transparencies, the rendering is in CMYK, and on pages without it, the color rendering is as defined by the image or by the color swatch.
6. Specifically concerning a document that might have on page 1 objects with a yellow outer glow on their outlines, whose effect decreases outward and thus generates transparency, and page 2 with simply a text of the same color.
7. The color of a text in RGB of value (0, 255, 46), for example (a fluorescent green), a non-printable color as indicated by the color swatch when you double-click on it. Non-printable means that a printing machine will not have the inks to reproduce this color. It will thus be replaced by the color indicated by the small square next to the exclamation mark triangle.
8. Therefore, on pages with transparency (page 1 in this example due to the outer glow of some objects), this green is replaced by its printable color because InDesign has to compute the flattening. This is not the case on page 2, where the green displays according to its RGB value.
That's it for the explanations. To avoid this, there are 2 solutions:
1. Always choose colors in CMYK mode, as this will help avoid unpleasant surprises during printing.
2. Go to the View Menu and check the two options ‘Overprint Preview’ and ‘Proof Colors’. This will give a closer preview of what the printer will output, regardless of the flattening.
I hope this will be useful.