Ghostlight

Summary

Ghostlight is a sequential colormap from cmasher. Lightness rises monotonically from 0.00 to 0.94, hue sweeps 209° from violet to green, and order holds under all three colorblind simulations.

Black→teal→cream sequential.

Perceptual profile (OKLCh)

• Lightness: 0.000 → 0.944 (range 0.944, min 0.000, max 0.944); monotonic; midpoint 0.525
• Chroma: min 0.000, max 0.172, mean 0.076
• Hue: 0.0° → 105.2° (span 208.7°), path monotonic-cw; quadrants: violet, magenta, rose, red, orange, yellow, chartreuse, green
• Endpoint temperature: null → warm
• Perceptual ΔE: total 125.4, mean/step 0.492, max step 0.775, smoothness 0.736, speed 0.492

Colorblind safety (ΔE under simulated CVD)

• Protanopia: ΔE total 103.1; preserves order: yes
• Deuteranopia: ΔE total 101.7; preserves order: yes
• Tritanopia: ΔE total 118.4; preserves order: yes

Related

• Family: cmasher
• Source: Ellert van der Velden — CMasher (10.21105/joss.02004)
• Similar sequential maps: Amber, Amethyst, Apple, Arctic, Bubblegum, Chroma, Cosmic, Dusk
• All colormaps