# Guppy

Canonical URL: https://colorcurio.us/colormaps/cmasher.guppy
Source type: Colormap
Type: diverging
Collection: cmasher
Attribution: Ellert van der Velden — CMasher (10.21105/joss.02004)
License: BSD-3
Source: https://raw.githubusercontent.com/1313e/CMasher/master/src/cmasher/colormaps/guppy/guppy_norm.txt
Tags: perceptually-uniform, diverging
Stops: 256

## Summary

Guppy is a diverging colormap from the cmasher collection. Inspect its perceptual lightness, chroma, and hue profile on colorcurio.us.

Multi-hue diverging.

## Perceptual profile (OKLCh)

- Lightness: 0.756 → 0.762 (range 0.414, min 0.349, max 0.762); non-monotonic; midpoint 0.349
- Chroma: min 0.113, max 0.247, mean 0.183
- Hue: 50.5° → 186.9° (span 223.6°), path monotonic-ccw; quadrants: orange, red, rose, magenta, violet, blue, azure, cyan
- Endpoint temperature: warm → cool
- Perceptual ΔE: total 157.9, mean/step 0.619, max step 0.855, smoothness 0.814, speed 0.619

## Colorblind safety (ΔE under simulated CVD)

- Protanopia: ΔE total 143.0; preserves order: yes
- Deuteranopia: ΔE total 131.9; preserves order: yes
- Tritanopia: ΔE total 144.1; preserves order: yes

## Related

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