# Sawtooth

Canonical URL: https://colorcurio.us/colormaps/niccoli.Swtth
Source type: Colormap
Type: sequential
Collection: niccoli
Attribution: Matteo Niccoli — pmkmp.m (MATLAB Central FX 28982)
License: BSD-3 (Niccoli, mycarta)
Source: https://github.com/mycarta/PMKMP/blob/master/pmkmp/pmkmp.m
Tags: rainbow, geoscience
Stops: 256

## Summary

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

Sawtooth-shaped lightness profile; 5 identical ramps for hardcore rainbow fans.

## Perceptual profile (OKLCh)

- Lightness: 0.800 → 0.514 (range 0.455, min 0.456, max 0.911); non-monotonic; midpoint 0.711
- Chroma: min 0.143, max 0.308, mean 0.201
- Hue: 327.2° → 21.2° (span 306.4°), path folded; quadrants: magenta, violet, blue, azure, cyan, mint, green, chartreuse, yellow, orange, red
- Endpoint temperature: cool → warm
- Perceptual ΔE: total 299.6, mean/step 1.175, max step 2.064, smoothness 0.650, speed 1.000

## Colorblind safety (ΔE under simulated CVD)

- Protanopia: ΔE total 242.9; preserves order: no
- Deuteranopia: ΔE total 239.3; preserves order: no
- Tritanopia: ΔE total 272.4; preserves order: no

## Related

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