# Rainbow Uniform

Canonical URL: https://colorcurio.us/colormaps/paraview.rainbow-uniform
Source type: Colormap
Type: sequential
Collection: paraview
Attribution: ParaView / VTK — Kitware (presets curated by Moreland, Samsel et al.)
License: BSD-3
Source: https://raw.githubusercontent.com/Kitware/ParaView/master/Remoting/Views/ColorMaps.json
Tags: rainbow, perceptually-uniform
Stops: 256

## Summary

Rainbow Uniform is a sequential colormap from the paraview collection. Inspect its perceptual lightness, chroma, and hue profile on colorcurio.us.

43-point perceptually-uniform rainbow.

## Perceptual profile (OKLCh)

- Lightness: 0.555 → 0.496 (range 0.470, min 0.496, max 0.966); non-monotonic; midpoint 0.965
- Chroma: min 0.115, max 0.267, mean 0.192
- Hue: 261.6° → 354.0° (span 267.6°), path monotonic-ccw; quadrants: blue, azure, cyan, mint, green, chartreuse, yellow, orange, red, rose
- Endpoint temperature: cool → warm
- Perceptual ΔE: total 199.4, mean/step 0.782, max step 1.320, smoothness 0.766, speed 0.782

## Colorblind safety (ΔE under simulated CVD)

- Protanopia: ΔE total 164.9; preserves order: yes
- Deuteranopia: ΔE total 149.3; preserves order: yes
- Tritanopia: ΔE total 143.3; preserves order: yes

## Related

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