ERDC Rainbow (dark)

Summary

ERDC Rainbow (dark) is a sequential colormap from paraview. Lightness spans 0.24–0.80, hue sweeps 239° from blue to red, and order breaks under deutan simulation.

ERDC SciVis dark-bg rainbow.

Perceptual profile (OKLCh)

• Lightness: 0.240 → 0.651 (range 0.562, min 0.240, max 0.802); non-monotonic; midpoint 0.708
• Chroma: min 0.104, max 0.223, mean 0.170
• Hue: 264.1° → 25.0° (span 239.2°), path monotonic-ccw; quadrants: blue, azure, cyan, mint, green, chartreuse, yellow, orange, red
• Endpoint temperature: cool → warm
• Perceptual ΔE: total 178.8, mean/step 0.701, max step 1.525, smoothness 0.640, speed 0.701

Colorblind safety (ΔE under simulated CVD)

• Protanopia: ΔE total 126.3; preserves order: yes
• Deuteranopia: ΔE total 111.6; preserves order: no
• Tritanopia: ΔE total 135.3; preserves order: yes

Related

• Family: paraview
• Source: ParaView / VTK — Kitware (presets curated by Moreland, Samsel et al.)
• Similar sequential maps: 2hot, Asymmetric Earth Tones, Black, Blue & White, Black-Body Radiation, Black, Orange & White, Blue-Green-Orange, ERDC Rainbow (bright), Haze
• All colormaps