Iceburn

Summary

Iceburn is a diverging colormap from cmasher. Two arms meet at a pivot of lightness 0.02, hue sweeps 263° from cyan to chartreuse, and order holds under all three colorblind simulations.

Blue↔orange diverging on dark midpoint.

Perceptual profile (OKLCh)

• Lightness: 0.902 → 0.895 (range 0.877, min 0.025, max 0.902); non-monotonic; midpoint 0.025
• Chroma: min 0.001, max 0.166, mean 0.100
• Hue: 197.2° → 100.7° (span 263.5°), path monotonic-cw; quadrants: cyan, azure, blue, violet, red, orange, yellow, chartreuse
• Pivot: t 0.498, lightness 0.025, hue jump 82.0°, smoothness 0.500
• Endpoint temperature: cool → warm
• Perceptual ΔE: total 196.4, mean/step 0.770, max step 1.262, smoothness 0.794, speed 0.770

Colorblind safety (ΔE under simulated CVD)

• Protanopia: ΔE total 166.6; preserves order: yes
• Deuteranopia: ΔE total 162.0; preserves order: yes
• Tritanopia: ΔE total 168.3; preserves order: yes

Related

• Family: cmasher
• Source: Ellert van der Velden — CMasher (10.21105/joss.02004)
• Similar diverging maps: Fusion, Guppy, Holly, Pride, Prinsenvlag, Redshift, Seaweed, Viola
• All colormaps