Fabio Crameri
The Scientific colour map

batlow

  • Perceptually uniform ✔︎
  • Perceptually ordered ✔︎
  • Colour-vision-deficiency friendly ✔︎
  • Readable as black-and-white print ✔︎
  • Provided in all major formats ✔︎

  • Sequential

  • No white; no black

  • The scientific rainbow
Go to download User guide
batlow: A Scientific colour map
Also available as

batlowW & batlowK

White-ended and black-ended.
batlowW: A Scientific colour map batlowK: A Scientific colour map
Go to download
batlow

Colour map diagnostics
Scientific diagnostics of the colour map batlow

The figure shows the colour map with low gradient ripples to indicate how it represents low-contrast regions in different locations of the colorbar, and a plot of the lightness difference, dE, indicating better perceptual-uniformity the flatter the curve.

→ Compare to the diagnostics of the rainbow (a.k.a. jet) colour map.

Diagnostics performed after Kovesi, P. (2015), Good colour maps: How to design them, CoRR, abs/1509.03700 and based on MatLab scripts from Peter Kovesi.

Read more about it here.