Cool to Warm

Summary

Cool to Warm is a diverging colormap from paraview. Two arms meet at a pivot of lightness 0.89, hue sweeps 111° from violet to red, and order holds under all three colorblind simulations.

3-point Moreland diverging; ParaView default for ratio data.

Perceptual profile (OKLCh)

• Lightness: 0.475 → 0.487 (range 0.419, min 0.475, max 0.895); non-monotonic; midpoint 0.895
• Chroma: min 0.001, max 0.195, mean 0.099
• Hue: 271.3° → 22.4° (span 111.1°), path monotonic-cw; quadrants: violet, red
• Pivot: t 0.498, lightness 0.895, hue jump 84.3°, smoothness 0.452
• Endpoint temperature: cool → warm
• Perceptual ΔE: total 113.8, mean/step 0.446, max step 0.813, smoothness 0.799, speed 0.446

Colorblind safety (ΔE under simulated CVD)

• Protanopia: ΔE total 105.2; preserves order: yes
• Deuteranopia: ΔE total 98.4; preserves order: yes
• Tritanopia: ΔE total 109.8; preserves order: yes

Related

• Family: paraview
• Source: ParaView / VTK — Kitware (presets curated by Moreland, Samsel et al.)
• Similar diverging maps: Blue Orange (div), Cold and Hot, Cool to Warm (Extended), ERDC DivHi PurpleGreen, ERDC DivLow IcePeach, ERDC DivLow PurpleGreen, ERDC Icefire (H), ERDC Icefire (L)
• All colormaps