Trying to make background colors fade into different background colors
I'm making a background for a comic book titles, and what I've done is make for the background on the left side, a redish color, and on the right side a blueish color. However the center of the background looks irregular, mainly cause the left side is made kinda redish, and the right being blueish. What I want to do is to make it so that the middle bit of the background sort of blends in with the red and the blue. Does anyone know how? I'm using Photoshop 2021 by the way.
