# Gnuplot

Canonical URL: https://colorcurio.us/colormaps/matplotlib.gnuplot
Source type: Colormap
Type: sequential
Collection: matplotlib
Attribution: matplotlib developers
License: matplotlib (BSD-derived)
Source: https://github.com/matplotlib/matplotlib/blob/main/lib/matplotlib/_cm.py
Tags: rainbow
Stops: 256

## Summary

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

Classic gnuplot RGB-formula ramp.

## Perceptual profile (OKLCh)

- Lightness: 0.000 → 0.968 (range 0.968, min 0.000, max 0.968); non-monotonic; midpoint 0.497
- Chroma: min 0.000, max 0.292, mean 0.198
- Hue: 0.0° → 109.8° (span 178.5°), path monotonic-cw; quadrants: rose, magenta, violet, red, orange, yellow, chartreuse
- Endpoint temperature: null → warm
- Perceptual ΔE: total 186.5, mean/step 0.732, max step 6.831, smoothness 0.070, speed 0.732

## Colorblind safety (ΔE under simulated CVD)

- Protanopia: ΔE total 173.0; preserves order: no
- Deuteranopia: ΔE total 158.5; preserves order: no
- Tritanopia: ΔE total 178.8; preserves order: no

## Related

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