Rainbow Uniform

Summary

Rainbow Uniform is a sequential colormap from paraview. Lightness spans 0.50–0.97, hue sweeps 268° from blue to rose, and order holds under all three colorblind simulations.

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: 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), ERDC Rainbow (dark)
• All colormaps