Linear Blue

Summary

Linear Blue is a sequential colormap from paraview. Lightness falls monotonically from 0.99 to 0.27, hue sweeps 117° from mint to violet, and order holds under all three colorblind simulations.

Lab linear-lightness blue ramp.

Perceptual profile (OKLCh)

• Lightness: 0.991 → 0.273 (range 0.718, min 0.273, max 0.991); monotonic; midpoint 0.646
• Chroma: min 0.012, max 0.096, mean 0.076
• Hue: 164.8° → 281.7° (span 116.8°), path monotonic-cw; quadrants: mint, cyan, azure, blue, violet
• Endpoint temperature: neutral → cool
• Perceptual ΔE: total 91.8, mean/step 0.360, max step 0.943, smoothness 0.634, speed 0.360

Colorblind safety (ΔE under simulated CVD)

• Protanopia: ΔE total 70.8; preserves order: yes
• Deuteranopia: ΔE total 70.0; preserves order: yes
• Tritanopia: ΔE total 85.3; 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