# Inferno

Canonical URL: https://colorcurio.us/colormaps/matplotlib.inferno
Source type: Colormap
Type: sequential
Collection: matplotlib
Attribution: matplotlib (Smith, van der Walt, Hunter et al.)
License: matplotlib (BSD-derived)
Source: https://matplotlib.org/stable/users/explain/colors/colormaps.html
Tags: perceptually-uniform
Stops: 256

## Summary

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

matplotlib default sequential variant; very dark start.

## Perceptual profile (OKLCh)

- Lightness: 0.053 → 0.977 (range 0.923, min 0.053, max 0.977); monotonic; midpoint 0.538
- Chroma: min 0.028, max 0.180, mean 0.147
- Hue: 280.2° → 109.7° (span 190.2°), path monotonic-cw; quadrants: violet, magenta, rose, red, orange, yellow, chartreuse
- Endpoint temperature: cool → warm
- Perceptual ΔE: total 151.7, mean/step 0.595, max step 1.077, smoothness 0.737, speed 0.595

## Colorblind safety (ΔE under simulated CVD)

- Protanopia: ΔE total 127.8; preserves order: yes
- Deuteranopia: ΔE total 124.6; preserves order: yes
- Tritanopia: ΔE total 124.2; preserves order: yes

## Related

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