Blue Orange (div)

Summary

Blue Orange (div) is a diverging colormap from paraview. Two arms meet at a pivot of lightness 1.00, hue sweeps 279° from violet to red, and order holds under all three colorblind simulations.

Lab-interpolated blue↔orange diverging.

Perceptual profile (OKLCh)

• Lightness: 0.208 → 0.199 (range 0.797, min 0.199, max 0.997); non-monotonic; midpoint 0.989
• Chroma: min 0.011, max 0.198, mean 0.139
• Hue: 282.4° → 3.5° (span 279.0°), path monotonic-ccw; quadrants: violet, blue, azure, cyan, mint, chartreuse, yellow, orange, red
• Pivot: t 0.502, lightness 0.997, hue jump 55.3°, smoothness 0.362
• Endpoint temperature: cool → warm
• Perceptual ΔE: total 244.7, mean/step 0.960, max step 3.824, smoothness 0.554, speed 0.960

Colorblind safety (ΔE under simulated CVD)

• Protanopia: ΔE total 205.1; preserves order: yes
• Deuteranopia: ΔE total 195.2; preserves order: yes
• Tritanopia: ΔE total 200.2; preserves order: yes

Related

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