# Glasbey (dark bg)

Canonical URL: https://colorcurio.us/colormaps/colorcet.glasbey-dark
Source type: Colormap
Type: categorical
Collection: colorcet
Attribution: Kovesi 2015 — "Good Colour Maps: How to Design Them" (arXiv:1509.03700)
License: CC-BY-4.0
Source: https://raw.githubusercontent.com/holoviz/colorcet/main/assets/Glasbey/glasbey_bw_minc_20_maxl_70_n256.csv
Tags: categorical, glasbey
Stops: 256

## Summary

Glasbey (dark bg) is a categorical colormap from the colorcet collection. Inspect its perceptual lightness, chroma, and hue profile on colorcurio.us.

Excludes too-dark colours; tuned for dark backgrounds.

## Perceptual profile (OKLCh)

- Lightness: 0.552 → 0.804 (range 0.594, min 0.216, max 0.810); non-monotonic; midpoint 0.805
- Chroma: min 0.037, max 0.302, mean 0.133
- Hue: 29.2° → 344.6° (span 360.0°), path folded; quadrants: red, violet, green, azure, yellow, rose, cyan, mint, blue, orange, magenta, chartreuse
- Endpoint temperature: warm → warm
- Perceptual ΔE: total 10248.5, mean/step 40.190, max step 105.127, smoothness 0.581, speed 1.000

## Colorblind safety (ΔE under simulated CVD)

- Protanopia: ΔE total 8116.0; preserves order: no
- Deuteranopia: ΔE total 7805.9; preserves order: no
- Tritanopia: ΔE total 8955.9; preserves order: no

## Related

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