I’m working on a logo using illustrator. I just put a black text over a red shape and my text is getting a boring yellow border around it. In this case, shape is red, but whatever the color I use, same issue happens. See below:
Note that there is a yellow edge around text. Why is that happening? My doc is on CMYK with the profile FOGRA39, but I noticed same issue when using default Working CMYK too.
It’s caused by anti-aliasing, used by Illustrator to display graphics without pixelated edges. However, anti-aliasing causes display artefacts when two colours butt up against each other. The problem doesn’t only affect Illustrator, but also other similar vector image editors.
You can eliminate the problem by selecting the text box, open the Appearance panel, and click on Opacity and set it to Multiply mode.
Example before (left) and after (right)
Alternatively, if this is for a print job, you can simply ignore it, since it’s not really there. It will only affect what’s displayed on screen.
Source : Link , Question Author : joaogdesigner , Answer Author : Billy Kerr