LinearL

Summary

LinearL is a sequential colormap from niccoli. Lightness rises monotonically from 0.10 to 0.95, hue sweeps 301° from rose to yellow, and order holds under all three colorblind simulations.

Linear lightness rainbow; 100% perceptual; for interval data without external lighting.

Perceptual profile (OKLCh)

• Lightness: 0.103 → 0.951 (range 0.847, min 0.103, max 0.951); monotonic; midpoint 0.537
• Chroma: min 0.000, max 0.215, mean 0.121
• Hue: 0.0° → 59.3° (span 300.7°), path monotonic-ccw; quadrants: rose, magenta, violet, blue, azure, cyan, mint, green, chartreuse, yellow
• Endpoint temperature: null → warm
• Perceptual ΔE: total 177.3, mean/step 0.696, max step 1.534, smoothness 0.609, speed 0.696

Colorblind safety (ΔE under simulated CVD)

• Protanopia: ΔE total 140.3; preserves order: yes
• Deuteranopia: ΔE total 137.2; preserves order: yes
• Tritanopia: ΔE total 151.3; preserves order: yes

Related

• Family: niccoli
• Source: Matteo Niccoli — pmkmp.m (MATLAB Central FX 28982)
• Similar sequential maps: CubicL, CubicYF, IsoL, LinLhot, Sawtooth
• All colormaps