# Sinebow

Canonical URL: https://colorcurio.us/colormaps/d3.sinebow
Source type: Colormap
Type: cyclic
Collection: d3
Attribution: Mike Bostock — d3-scale-chromatic
License: ISC
Source: https://github.com/d3/d3-scale-chromatic/blob/main/src/sequential-multi/sinebow.js
Tags: cyclic, rainbow
Stops: 256

## Summary

Sinebow is a cyclic colormap from the d3 collection. Inspect its perceptual lightness, chroma, and hue profile on colorcurio.us.

Sinusoidal hue cycle.

## Perceptual profile (OKLCh)

- Lightness: 0.659 → 0.659 (range 0.366, min 0.508, max 0.875); non-monotonic; midpoint 0.732
- Chroma: min 0.122, max 0.278, mean 0.222
- Hue: 26.1° → 26.1° (span 360.0°), path monotonic-cw; quadrants: red, orange, yellow, chartreuse, green, mint, cyan, azure, blue, violet, magenta, rose
- Endpoint temperature: warm → warm
- Perceptual ΔE: total 238.0, mean/step 0.933, max step 2.101, smoothness 0.509, speed 0.933

## Colorblind safety (ΔE under simulated CVD)

- Protanopia: ΔE total 183.5; preserves order: no
- Deuteranopia: ΔE total 170.0; preserves order: no
- Tritanopia: ΔE total 199.9; preserves order: no

## Related

- Family: https://colorcurio.us/colormaps/families/d3
- All colormaps: https://colorcurio.us/colormaps