# PuRd

Canonical URL: https://colorcurio.us/colormaps/colorbrewer.PuRd
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-red, light-start
Stops: 256

## Summary

PuRd 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 'PuRd' (9-class anchors).

## Perceptual profile (OKLCh)

- Lightness: 0.971 → 0.327 (range 0.644, min 0.327, max 0.971); monotonic; midpoint 0.679
- Chroma: min 0.007, max 0.231, mean 0.128
- Hue: 312.3° → 14.2° (span 68.9°), path folded; quadrants: magenta, rose, red
- Endpoint temperature: neutral → warm
- Perceptual ΔE: total 85.7, mean/step 0.336, max step 0.465, smoothness 0.804, speed 0.336

## Colorblind safety (ΔE under simulated CVD)

- Protanopia: ΔE total 81.8; preserves order: yes
- Deuteranopia: ΔE total 78.7; preserves order: yes
- Tritanopia: ΔE total 84.7; preserves order: yes

## Related

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