What light does blender use in Solid mode in viewport?

I tried to make in Opengl with reverse fresnel, but thats not satisfactory as in blender right side of a face always looks more darkish than left side.

And Fresnel accounts both sides to be equally such giving is blend look and not distinct.

You tried some other settings…

…or even you own ?? Maybe some MatCap (also customizable).

Thanks bro, that kinda helped me picking right colors for my viewport, Actually I don’t use blender but was interested how blenders renders their object on solid mode.

As as you suggested, I came to know they uses four lights around which are parented to the camera.

I’ll try to imitate such configuration in my project.