# Matter

Canonical URL: https://colorcurio.us/colormaps/cmocean.matter
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, light-start, magenta
Stops: 256

## Summary

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

Designed for turbidity / suspended particulates.

## Perceptual profile (OKLCh)

- Lightness: 0.946 → 0.246 (range 0.699, min 0.246, max 0.946); monotonic; midpoint 0.588
- Chroma: min 0.080, max 0.175, mean 0.137
- Hue: 94.9° → 313.3° (span 141.6°), path monotonic-ccw; quadrants: chartreuse, yellow, orange, red, rose, magenta
- Endpoint temperature: warm → cool
- Perceptual ΔE: total 98.1, mean/step 0.385, max step 0.471, smoothness 0.827, speed 0.385

## Colorblind safety (ΔE under simulated CVD)

- Protanopia: ΔE total 84.9; preserves order: yes
- Deuteranopia: ΔE total 83.2; preserves order: yes
- Tritanopia: ΔE total 87.6; preserves order: yes

## Related

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