# Thermal

Canonical URL: https://colorcurio.us/colormaps/cmocean.thermal
Source type: Colormap
Type: sequential
Collection: cmocean
Attribution: Thyng, Greene, Hetland, Zimmerle, DiMarco 2016, Oceanography 29(3)
License: MIT
Source: https://matplotlib.org/cmocean/
Tags: oceanography, dark-start
Stops: 256

## Summary

Thermal is a sequential colormap from the cmocean collection. Inspect its perceptual lightness, chroma, and hue profile on colorcurio.us.

Designed for sea surface temperature.

## Perceptual profile (OKLCh)

- Lightness: 0.244 → 0.944 (range 0.700, min 0.244, max 0.944); monotonic; midpoint 0.588
- Chroma: min 0.047, max 0.180, mean 0.134
- Hue: 235.7° → 115.6° (span 239.9°), path monotonic-cw; quadrants: azure, blue, violet, magenta, rose, red, orange, yellow, chartreuse
- Endpoint temperature: cool → warm
- Perceptual ΔE: total 137.5, mean/step 0.539, max step 0.673, smoothness 0.798, speed 0.539

## Colorblind safety (ΔE under simulated CVD)

- Protanopia: ΔE total 107.5; preserves order: yes
- Deuteranopia: ΔE total 105.8; preserves order: yes
- Tritanopia: ΔE total 121.7; preserves order: yes

## Related

- Family: https://colorcurio.us/colormaps/families/cmocean
- All colormaps: https://colorcurio.us/colormaps