IsoAZ180

Summary

IsoAZ180 is a cyclic colormap from niccoli. Lightness spans 0.68–0.71, hue sweeps 360° from red to orange, and order breaks under protan, deutan, and tritan simulation.

Hue-doubled isoluminant cycle for orientation data with 180° equivalence.

Perceptual profile (OKLCh)

• Lightness: 0.713 → 0.712 (range 0.029, min 0.684, max 0.713); non-monotonic; midpoint 0.712
• Chroma: min 0.090, max 0.125, mean 0.106
• Hue: 0.3° → 17.1° (span 360.0°), path monotonic-ccw; quadrants: red, rose, magenta, violet, blue, azure, cyan, mint, green, chartreuse, yellow, orange
• Endpoint temperature: warm → warm
• Perceptual ΔE: total 300.5, mean/step 1.178, max step 1.592, smoothness 0.859, speed 1.000

Colorblind safety (ΔE under simulated CVD)

• Protanopia: ΔE total 170.8; preserves order: no
• Deuteranopia: ΔE total 174.3; preserves order: no
• Tritanopia: ΔE total 252.7; preserves order: no

Related

• Family: niccoli
• Source: Matteo Niccoli — pmkmp.m (MATLAB Central FX 28982)
• Similar cyclic maps: IsoAZ
• All colormaps