Inferno

Summary

Inferno is a sequential colormap from matplotlib. Lightness rises monotonically from 0.05 to 0.98, hue sweeps 190° from violet to chartreuse, and order holds under all three colorblind simulations.

matplotlib default sequential variant; very dark start.

Perceptual profile (OKLCh)

• Lightness: 0.053 → 0.977 (range 0.923, min 0.053, max 0.977); monotonic; midpoint 0.538
• Chroma: min 0.028, max 0.180, mean 0.147
• Hue: 280.2° → 109.7° (span 190.2°), path monotonic-cw; quadrants: violet, magenta, rose, red, orange, yellow, chartreuse
• Endpoint temperature: cool → warm
• Perceptual ΔE: total 151.7, mean/step 0.595, max step 1.077, smoothness 0.737, speed 0.595

Colorblind safety (ΔE under simulated CVD)

• Protanopia: ΔE total 127.8; preserves order: yes
• Deuteranopia: ΔE total 124.6; preserves order: yes
• Tritanopia: ΔE total 124.2; preserves order: yes

Related

• Family: matplotlib
• Source: matplotlib (Smith, van der Walt, Hunter et al.)
• Similar sequential maps: AFM Hot, Bone, BRG, Cividis, Copper, Cubehelix, Gist Earth, Gist NCAR
• All colormaps