Fabio Crameri

batlow scientific color palette by 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

Also available as:

batlowW scientific color palette by Fabio Crameri

batlowW

Fantastic to highlight data on light background.

Sequential
White-ended

batlowK scientific color palette by Fabio Crameri

batlowK

Fantastic to highlight data on dark background.

Sequential
Black-ended

batlow10 discrete scientific color palette by Fabio Crameri

batlow10 (or batlow25)

Convenient to pinpoint local data-value ranges.

Discrete

batlowS categorical scientific color palette by Fabio Crameri

batlowS (or batlowWS & batlowKS)

Your best choice for categorical data such as line or scatter plots.

Categorical

batlow

Scientific diagnostics

The figure shows the colour map with low gradient ripples to indicate how it represents low-contrast regions in different locations of the colourbar, 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.