Sapphire

Summary

Sapphire is a sequential colormap from cmasher. Lightness rises monotonically from 0.00 to 0.90, hue sweeps 169° from violet to cyan, and order holds under all three colorblind simulations.

Black→sapphire-blue sequential.

Perceptual profile (OKLCh)

• Lightness: 0.000 → 0.901 (range 0.901, min 0.000, max 0.901); monotonic; midpoint 0.517
• Chroma: min 0.000, max 0.128, mean 0.067
• Hue: 0.0° → 191.0° (span 169.0°), path monotonic-ccw; quadrants: violet, blue, azure, cyan
• Endpoint temperature: null → cool
• Perceptual ΔE: total 89.6, mean/step 0.351, max step 0.451, smoothness 0.808, speed 0.351

Colorblind safety (ΔE under simulated CVD)

• Protanopia: ΔE total 85.4; preserves order: yes
• Deuteranopia: ΔE total 82.2; preserves order: yes
• Tritanopia: ΔE total 76.2; 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