# Summer

Canonical URL: https://colorcurio.us/colormaps/vispy.summer
Source type: Colormap
Type: sequential
Collection: vispy
Attribution: vispy 0.x, vispy/color/colormap.py
License: BSD-3-Clause
Source: https://vispy.org/api/vispy.color.colormap.html
Tags: MATLAB-derived, green-yellow
Stops: 256

## Summary

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

vispy preset 'summer' (dark teal→pale yellow).

## Perceptual profile (OKLCh)

- Lightness: 0.533 → 0.972 (range 0.439, min 0.533, max 0.972); monotonic; midpoint 0.752
- Chroma: min 0.102, max 0.171, mean 0.125
- Hue: 172.3° → 109.2° (span 63.0°), path monotonic-ccw; quadrants: mint, green, chartreuse
- Endpoint temperature: warm → warm
- Perceptual ΔE: total 50.3, mean/step 0.197, max step 0.242, smoothness 0.867, speed 0.197

## Colorblind safety (ΔE under simulated CVD)

- Protanopia: ΔE total 44.8; preserves order: yes
- Deuteranopia: ΔE total 51.5; preserves order: yes
- Tritanopia: ΔE total 55.5; preserves order: yes

## Related

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