# PuBuGn

Canonical URL: https://colorcurio.us/colormaps/colorbrewer.PuBuGn
Source type: Colormap
Type: sequential
Collection: colorbrewer
Attribution: Cynthia Brewer & Mark Harrower, ColorBrewer 2.0
License: Apache-2.0
Source: https://colorbrewer2.org/
Tags: sequential, colorbrewer, purple-blue-green, light-start
Stops: 256

## Summary

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

ColorBrewer 2.0 sequential multi-hue 'PuBuGn' (9-class anchors).

## Perceptual profile (OKLCh)

- Lightness: 0.983 → 0.351 (range 0.632, min 0.351, max 0.983); monotonic; midpoint 0.707
- Chroma: min 0.010, max 0.110, mean 0.064
- Hue: 345.4° → 171.1° (span 174.3°), path monotonic-ccw; quadrants: magenta, violet, blue, azure, cyan, mint
- Endpoint temperature: warm → warm
- Perceptual ΔE: total 86.3, mean/step 0.339, max step 0.563, smoothness 0.688, speed 0.339

## Colorblind safety (ΔE under simulated CVD)

- Protanopia: ΔE total 75.1; preserves order: yes
- Deuteranopia: ΔE total 76.5; preserves order: yes
- Tritanopia: ΔE total 76.6; preserves order: yes

## Related

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