Preflight error: color spaces not allowed

Question

Hi, I’m working with a lot of tables in a document. These tables contain some graphics that are grayscale. The issues is not with the images, but the preflight keeps telling me multiple tables have the “Content uses RGB” error. I have double checked the graphics, even deleted them, but the error persists on the table. None of the swatches are color, they’re all black in different tints. Pictures of the preflight error, the preflight profile, and the swatches attached.

Eugene Tyson · Accepted Answer

It’s probably the white fill in the cell. It looks like it’s set to RGB white - select your entire table, and set the fill to paper or none.

None is better, in my opinion.

It’s one of those that could trip up a printing task with a sorta false alarm.

You could try the Swatches panel and the top right click the 3 lines and then use the Add Unnamed Swatches, if RGB white is added, then delete it and replace it with either paper or none - none is my preference most of the time.

Also check the strokes of the Table, sometimes they are RGB black if brought in from Word. Again replace RGB black with pure black.

rob day · Answer

Hi ​@clarty, What is the entire Preflight panel showing (Window > Output >Preflight)? There could be an unnamed RGB color, not defined as a Swatch, used somewhere in the table. The Preflight panel should list the object throwing the error and its page number. Even an invisible (a space, em space, en space, etc.) would get listed as errors.

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