Isolum CGO 80

Summary

Isolum CGO 80 is a sequential colormap from colorcet. Lightness spans 0.82–0.83, hue sweeps 177° from azure to orange, and order breaks under tritan simulation.

Perceptual profile (OKLCh)

• Lightness: 0.820 → 0.827 (range 0.019, min 0.816, max 0.835); non-monotonic; midpoint 0.817
• Chroma: min 0.090, max 0.113, mean 0.102
• Hue: 230.4° → 53.1° (span 177.3°), path monotonic-ccw; quadrants: azure, cyan, mint, green, chartreuse, yellow, orange
• Endpoint temperature: cool → warm
• Perceptual ΔE: total 77.3, mean/step 0.303, max step 0.361, smoothness 0.835, speed 0.303

Colorblind safety (ΔE under simulated CVD)

• Protanopia: ΔE total 47.5; preserves order: yes
• Deuteranopia: ΔE total 47.5; preserves order: yes
• Tritanopia: ΔE total 60.3; preserves order: no

Related

• Family: colorcet
• Source: Kovesi 2015 — "Good Colour Maps: How to Design Them" (arXiv:1509.03700)
• Similar sequential maps: Bgy, Bgyw, Blues (perceptual), Bmw, Bmy, CB-Kbw, CB-Kyw, CB-Kcw
• All colormaps