# Sunset

Canonical URL: https://colorcurio.us/colormaps/tol.sunset
Source type: Colormap
Type: diverging
Collection: tol
Attribution: Paul Tol, "Colour Schemes" (SRON/EPS/TN/09-002)
License: BSD-3-Clause
Source: https://sronpersonalpages.nl/~pault/
Tags: cvd-friendly
Stops: 256

## Summary

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

Diverging blue-yellow-red; designed for CVD compatibility.

## Perceptual profile (OKLCh)

- Lightness: 0.440 → 0.456 (range 0.492, min 0.440, max 0.933); non-monotonic; midpoint 0.932
- Chroma: min 0.023, max 0.199, mean 0.107
- Hue: 269.2° → 20.8° (span 248.4°), path monotonic-ccw; quadrants: blue, azure, cyan, mint, green, chartreuse, yellow, orange, red
- Endpoint temperature: cool → warm
- Perceptual ΔE: total 148.2, mean/step 0.581, max step 0.815, smoothness 0.783, speed 0.581

## Colorblind safety (ΔE under simulated CVD)

- Protanopia: ΔE total 133.2; preserves order: yes
- Deuteranopia: ΔE total 125.4; preserves order: yes
- Tritanopia: ΔE total 133.8; preserves order: yes

## Related

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