ERDC DivHi PurpleGreen

Summary

ERDC DivHi PurpleGreen is a diverging colormap from paraview. Two arms meet at a pivot of lightness 0.94, hue sweeps 190° from magenta to green, and order holds under all three colorblind simulations.

ERDC high-contrast purple↔green diverging.

Perceptual profile (OKLCh)

• Lightness: 0.335 → 0.306 (range 0.634, min 0.306, max 0.940); non-monotonic; midpoint 0.939
• Chroma: min 0.000, max 0.175, mean 0.084
• Hue: 304.1° → 134.6° (span 190.4°), path folded; quadrants: magenta, green
• Pivot: t 0.502, lightness 0.940, hue jump 177.2°, smoothness 0.591
• Endpoint temperature: cool → warm
• Perceptual ΔE: total 146.5, mean/step 0.574, max step 0.779, smoothness 0.817, speed 0.574

Colorblind safety (ΔE under simulated CVD)

• Protanopia: ΔE total 138.6; preserves order: yes
• Deuteranopia: ΔE total 135.7; preserves order: yes
• Tritanopia: ΔE total 127.8; 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 DivLow IcePeach, ERDC DivLow PurpleGreen, ERDC Icefire (H), ERDC Icefire (L)
• All colormaps