# ERDC Purple-to-Green

Canonical URL: https://colorcurio.us/colormaps/paraview.erdc-purple-to-green
Source type: Colormap
Type: diverging
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: diverging
Stops: 256

## Summary

ERDC Purple-to-Green is a diverging colormap from the paraview collection. Inspect its perceptual lightness, chroma, and hue profile on colorcurio.us.

ERDC SciVis purple↔green diverging.

## Perceptual profile (OKLCh)

- Lightness: 0.333 → 0.942 (range 0.609, min 0.333, max 0.942); monotonic; midpoint 0.632
- Chroma: min 0.000, max 0.176, mean 0.101
- Hue: 290.1° → 126.2° (span 182.9°), path monotonic-ccw; quadrants: violet, magenta, green
- Endpoint temperature: cool → warm
- Perceptual ΔE: total 93.6, mean/step 0.367, max step 0.916, smoothness 0.531, speed 0.367

## Colorblind safety (ΔE under simulated CVD)

- Protanopia: ΔE total 85.0; preserves order: yes
- Deuteranopia: ΔE total 83.0; preserves order: yes
- Tritanopia: ΔE total 78.3; preserves order: yes

## Related

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