I wanted to plot three 2d densities of n0, n1 and n2 using imshow() command in matplotlib and show their colorbars.

The densities are quite different and even when i normalize them the final image is not a good quality plot. Usually the colors are changing and one can not see the difference.
I also tried to add three densities and then plot, but that also does not work.

Does anybody have a similar experience? Please let me know. Thanks