# Haline

Canonical URL: https://colorcurio.us/colormaps/cmocean.haline
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-green
Stops: 256

## Summary

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

Designed for salinity.

## Perceptual profile (OKLCh)

- Lightness: 0.296 → 0.945 (range 0.649, min 0.296, max 0.945); monotonic; midpoint 0.605
- Chroma: min 0.078, max 0.189, mean 0.127
- Hue: 283.9° → 99.7° (span 184.3°), path monotonic-ccw; quadrants: violet, blue, azure, cyan, mint, green, chartreuse
- Endpoint temperature: cool → warm
- Perceptual ΔE: total 113.6, mean/step 0.446, max step 0.598, smoothness 0.868, speed 0.446

## Colorblind safety (ΔE under simulated CVD)

- Protanopia: ΔE total 93.2; preserves order: yes
- Deuteranopia: ΔE total 93.6; preserves order: yes
- Tritanopia: ΔE total 96.4; preserves order: yes

## Related

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