NCL wind 17lev

Summary

NCL wind 17lev is a sequential colormap from ncar. Lightness spans 0.60–1.00, hue sweeps 220° from chartreuse to blue, and order breaks under protan, deutan, and tritan simulation.

NCL wind magnitude ramp.

Perceptual profile (OKLCh)

• Lightness: 1.000 → 0.840 (range 0.397, min 0.603, max 1.000); non-monotonic; midpoint 0.750
• Chroma: min 0.000, max 0.240, mean 0.139
• Hue: 0.0° → 268.9° (span 220.3°), path monotonic-ccw; quadrants: chartreuse, green, yellow, orange, red, rose, magenta, violet, blue
• Endpoint temperature: null → cool
• Perceptual ΔE: total 213.4, mean/step 0.837, max step 2.030, smoothness 0.541, speed 0.837

Colorblind safety (ΔE under simulated CVD)

• Protanopia: ΔE total 175.3; preserves order: no
• Deuteranopia: ΔE total 172.9; preserves order: no
• Tritanopia: ΔE total 203.3; preserves order: no

Related

• Family: ncar
• Source: NCL/NCAR — UCAR (via hhuangwx/cmaps MIT wrapper)
• Similar sequential maps: NCL CBR drywet, NCL CBR wet, GMT drywet, GMT topo, MPL terrain (NCL), NCL precip 15lev, NCL temp 19lev, NCL topo 15lev
• All colormaps