# YlGnBu

Canonical URL: https://colorcurio.us/colormaps/colorbrewer.YlGnBu
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, yellow-green-blue, light-start
Stops: 256

## Summary

YlGnBu 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 'YlGnBu' (9-class anchors).

## Perceptual profile (OKLCh)

- Lightness: 0.990 → 0.260 (range 0.730, min 0.260, max 0.990); monotonic; midpoint 0.718
- Chroma: min 0.049, max 0.157, mean 0.104
- Hue: 107.3° → 264.6° (span 162.8°), path monotonic-cw; quadrants: chartreuse, green, mint, cyan, azure, blue, violet
- Endpoint temperature: neutral → cool
- Perceptual ΔE: total 108.1, mean/step 0.424, max step 0.657, smoothness 0.710, speed 0.424

## Colorblind safety (ΔE under simulated CVD)

- Protanopia: ΔE total 96.7; preserves order: yes
- Deuteranopia: ΔE total 97.7; preserves order: yes
- Tritanopia: ΔE total 90.2; preserves order: yes

## Related

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