Batlow
Crameri scientific colour maps (batlow)
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A synthetic demo grid, classed with equal intervals — the point is the palette against real basemap ink, not the data. Switch themes to see how much basemap the palette leaves room for.
Metadata
Provenance
Batlow is the flagship of Fabio Crameri's Scientific colour maps, published as a direct, citable replacement for the rainbow ramps that still dominate geoscience figures. It travels dark navy through teal, olive and tan to a pale pink, holding a strictly monotonic lightness ramp the whole way, so a reader can order values without decoding hue. The maps are versioned and archived on Zenodo (v8.0 and later carry an MIT license) and Crameri documents the family as readable for color-vision-deficient readers and in black and white.
When to use it
The best general-purpose ramp in this corpus when you need more than five distinguishable steps out of a single numeric field — modelled surfaces, interpolated rasters, anything a scientist will screenshot into a paper. It has more hue variety than viridis, which helps readers pick out narrow bands, at the cost of a busier map. The pale pink top end is easy to lose on a white basemap: use batlowK or batlowW if you need the extreme to be unmistakable.
License
MIT · source
The color specification carries this license, which is separate from the MIT license on this site. See attribution.