# ERDC Rainbow (bright)

Canonical URL: https://colorcurio.us/colormaps/paraview.erdc-rainbow-bright
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

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

ERDC SciVis bright rainbow.

## Perceptual profile (OKLCh)

- Lightness: 0.494 → 0.651 (range 0.368, min 0.494, max 0.861); non-monotonic; midpoint 0.826
- Chroma: min 0.127, max 0.274, mean 0.184
- Hue: 279.4° → 25.0° (span 254.4°), path monotonic-ccw; quadrants: violet, blue, azure, cyan, mint, green, chartreuse, yellow, orange, red
- Endpoint temperature: cool → warm
- Perceptual ΔE: total 180.2, mean/step 0.707, max step 1.176, smoothness 0.670, speed 0.707

## Colorblind safety (ΔE under simulated CVD)

- Protanopia: ΔE total 124.7; preserves order: yes
- Deuteranopia: ΔE total 107.9; preserves order: yes
- Tritanopia: ΔE total 127.6; preserves order: yes

## Related

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