Rebake texture then the colour of texture is changed


When I rebake texture to a new UV colour is changed. After rebake, I use the colour picker to define the colour.

The original texture of the cube has colour #41FF6A. Cube texture with new UV has #40FE69.

I try to bake at the same object and to another object. In both cases, the problem is here.

Why is it happens? Why are not colours the same? Can I fix it?

Change UV.blend (696.2 KB)