# Viridis

Canonical URL: https://colorcurio.us/colormaps/matplotlib.viridis
Source type: Colormap
Type: sequential
Collection: matplotlib
Attribution: Smith & van der Walt 2015 (matplotlib)
License: matplotlib (BSD-derived)
Source: https://matplotlib.org/stable/users/explain/colors/colormaps.html
Tags: perceptually-uniform, dark-start, default-scientific
Stops: 256

## Summary

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

matplotlib default sequential colormap. Sourced from matplotlib _cm_listed.py.

## Perceptual profile (OKLCh)

- Lightness: 0.285 → 0.918 (range 0.633, min 0.285, max 0.918); monotonic; midpoint 0.593
- Chroma: min 0.082, max 0.194, mean 0.133
- Hue: 318.1° → 102.0° (span 216.1°), path monotonic-ccw; quadrants: magenta, violet, blue, azure, cyan, mint, green, chartreuse
- Endpoint temperature: cool → warm
- Perceptual ΔE: total 120.5, mean/step 0.473, max step 0.581, smoothness 0.851, speed 0.473

## Colorblind safety (ΔE under simulated CVD)

- Protanopia: ΔE total 91.9; preserves order: yes
- Deuteranopia: ΔE total 90.5; preserves order: yes
- Tritanopia: ΔE total 124.6; preserves order: yes

## Related

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