LinLhot

Summary

LinLhot is a sequential colormap from niccoli. Lightness rises monotonically from 0.10 to 0.95, hue sweeps 95° from red to chartreuse, and order breaks under tritan simulation.

Linear-lightness modification of MATLAB hot palette.

Perceptual profile (OKLCh)

• Lightness: 0.104 → 0.947 (range 0.842, min 0.104, max 0.947); monotonic; midpoint 0.576
• Chroma: min 0.009, max 0.230, mean 0.158
• Hue: 18.6° → 107.9° (span 94.6°), path folded; quadrants: red, orange, yellow, chartreuse
• Endpoint temperature: warm → warm
• Perceptual ΔE: total 144.3, mean/step 0.566, max step 1.417, smoothness 0.553, speed 0.566

Colorblind safety (ΔE under simulated CVD)

• Protanopia: ΔE total 100.2; preserves order: yes
• Deuteranopia: ΔE total 95.3; preserves order: yes
• Tritanopia: ΔE total 127.2; preserves order: no

Related

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