# PuOr

Canonical URL: https://colorcurio.us/colormaps/colorbrewer.PuOr
Source type: Colormap
Type: diverging
Collection: colorbrewer
Attribution: Cynthia Brewer & Mark Harrower, ColorBrewer 2.0
License: Apache-2.0
Source: https://colorbrewer2.org/
Tags: diverging, colorbrewer, purple-orange
Stops: 256

## Summary

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

ColorBrewer 2.0 diverging 'PuOr' (11-class anchors).

## Perceptual profile (OKLCh)

- Lightness: 0.434 → 0.237 (range 0.738, min 0.237, max 0.975); non-monotonic; midpoint 0.975
- Chroma: min 0.001, max 0.156, mean 0.093
- Hue: 50.1° → 305.4° (span 155.5°), path monotonic-ccw; quadrants: orange, yellow, violet, magenta
- Endpoint temperature: warm → cool
- Perceptual ΔE: total 152.7, mean/step 0.599, max step 1.035, smoothness 0.756, speed 0.599

## Colorblind safety (ΔE under simulated CVD)

- Protanopia: ΔE total 149.4; preserves order: yes
- Deuteranopia: ΔE total 146.0; preserves order: yes
- Tritanopia: ΔE total 142.5; preserves order: yes

## Related

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