# PRGn

Canonical URL: https://colorcurio.us/colormaps/colorbrewer.PRGn
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-green
Stops: 256

## Summary

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

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

## Perceptual profile (OKLCh)

- Lightness: 0.269 → 0.338 (range 0.706, min 0.269, max 0.975); non-monotonic; midpoint 0.975
- Chroma: min 0.001, max 0.155, mean 0.088
- Hue: 320.8° → 150.0° (span 194.8°), path monotonic-cw; quadrants: magenta, green, mint
- Endpoint temperature: cool → warm
- Perceptual ΔE: total 155.5, mean/step 0.610, max step 0.882, smoothness 0.809, speed 0.610

## Colorblind safety (ΔE under simulated CVD)

- Protanopia: ΔE total 144.3; preserves order: yes
- Deuteranopia: ΔE total 138.3; preserves order: yes
- Tritanopia: ΔE total 144.1; preserves order: yes

## Related

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