Warm to Cool (Extended)

Summary

Warm to Cool (Extended) is a diverging colormap from paraview. Two arms meet at a pivot of lightness 0.98, hue sweeps 275° from red to violet, and order holds under all three colorblind simulations.

Reverse 45-point Moreland extended diverging.

Perceptual profile (OKLCh)

• Lightness: 0.297 → 0.246 (range 0.732, min 0.246, max 0.978); non-monotonic; midpoint 0.978
• Chroma: min 0.028, max 0.198, mean 0.144
• Hue: 8.4° → 283.9° (span 275.5°), path monotonic-cw; quadrants: red, orange, yellow, chartreuse, mint, cyan, azure, blue, violet
• Pivot: t 0.498, lightness 0.978, hue jump 55.8°, smoothness 0.591
• Endpoint temperature: warm → cool
• Perceptual ΔE: total 226.5, mean/step 0.888, max step 9.671, smoothness 0.291, speed 0.888

Colorblind safety (ΔE under simulated CVD)

• Protanopia: ΔE total 195.5; preserves order: yes
• Deuteranopia: ΔE total 180.7; preserves order: yes
• Tritanopia: ΔE total 186.3; 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