Colors look different between AE and Illustrator

I'm importing an Illustrator file into AE and there is a significant difference between the yellow color I'm using. Illustrator file is set to RGB color mode so it's not that. My guess is that I need to implement a color space in After Effects, is this correct? And if so, which one? And should I "linearize" that space? AND WHAT DOES THAT EVEN MEAN??

Thanks