# Ice

Canonical URL: https://colorcurio.us/colormaps/cmocean.ice
Source type: Colormap
Type: sequential
Collection: cmocean
Attribution: Thyng, Greene, Hetland, Zimmerle, DiMarco 2016, Oceanography 29(3)
License: MIT
Source: https://matplotlib.org/cmocean/
Tags: oceanography, dark-start, blue
Stops: 256

## Summary

Ice is a sequential colormap from the cmocean collection. Inspect its perceptual lightness, chroma, and hue profile on colorcurio.us.

Designed for sea ice concentration.

## Perceptual profile (OKLCh)

- Lightness: 0.127 → 0.980 (range 0.854, min 0.127, max 0.980); monotonic; midpoint 0.569
- Chroma: min 0.020, max 0.126, mean 0.080
- Hue: 272.4° → 197.8° (span 85.2°), path monotonic-ccw; quadrants: violet, blue, azure, cyan
- Endpoint temperature: cool → cool
- Perceptual ΔE: total 97.4, mean/step 0.382, max step 0.601, smoothness 0.859, speed 0.382

## Colorblind safety (ΔE under simulated CVD)

- Protanopia: ΔE total 86.6; preserves order: yes
- Deuteranopia: ΔE total 86.4; preserves order: yes
- Tritanopia: ΔE total 86.9; preserves order: yes

## Related

- Family: https://colorcurio.us/colormaps/families/cmocean
- All colormaps: https://colorcurio.us/colormaps