Warm to Cool

Summary

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

Reverse 3-point Moreland diverging.

Perceptual profile (OKLCh)

• Lightness: 0.487 → 0.475 (range 0.419, min 0.475, max 0.895); non-monotonic; midpoint 0.894
• Chroma: min 0.001, max 0.195, mean 0.099
• Hue: 22.4° → 271.3° (span 111.1°), path monotonic-ccw; quadrants: red, violet
• Pivot: t 0.502, lightness 0.895, hue jump 84.3°, smoothness 0.452
• Endpoint temperature: warm → cool
• 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, Cool to Warm (Extended), ERDC DivHi PurpleGreen, ERDC DivLow IcePeach, ERDC DivLow PurpleGreen, ERDC Icefire (H)
• All colormaps