These are called perceptually uniform colormaps and are also useful for grayscale printing, as the scale will still be valid. This is now the default in Matplot

These are called perceptually uniform colormaps and are also useful for grayscale printing, as the scale will still be valid. This is now the default in Matplotlib (eg viridis, magma, etc) https://jakevdp.github.io/blog/2014/10/16/how-bad-is-your-colormap/ https://jakevdp.github.io/blog/2014/10/16/how-bad-is-your-co... I have found occasion to use Jet though, it's good for highlighting transitions between close values when the colour scale is large (but not large enough to use a log map).