# RdGy

Canonical URL: https://colorcurio.us/colormaps/colorbrewer.RdGy
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, red-grey
Stops: 256

## Summary

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

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

## Perceptual profile (OKLCh)

- Lightness: 0.327 → 0.218 (range 0.780, min 0.218, max 0.998); non-monotonic; midpoint 0.998
- Chroma: min 0.000, max 0.184, mean 0.055
- Hue: 14.2° → 0.0° (span 52.4°), path monotonic-ccw; quadrants: red, orange
- Endpoint temperature: warm → null
- Perceptual ΔE: total 152.0, mean/step 0.596, max step 0.924, smoothness 0.720, speed 0.596

## Colorblind safety (ΔE under simulated CVD)

- Protanopia: ΔE total 147.9; preserves order: yes
- Deuteranopia: ΔE total 143.1; preserves order: yes
- Tritanopia: ΔE total 153.0; preserves order: yes

## Related

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