# Bgy

Canonical URL: https://colorcurio.us/colormaps/colorcet.bgy
Source type: Colormap
Type: sequential
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/CET/linear_bgy_10-95_c74_n256.csv
Tags: perceptually-uniform, dark-bg
Stops: 256

## Summary

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

## Perceptual profile (OKLCh)

- Lightness: 0.277 → 0.940 (range 0.663, min 0.277, max 0.940); monotonic; midpoint 0.575
- Chroma: min 0.091, max 0.247, mean 0.187
- Hue: 264.2° → 105.2° (span 159.1°), path monotonic-ccw; quadrants: blue, azure, cyan, mint, green, chartreuse
- Endpoint temperature: cool → warm
- Perceptual ΔE: total 128.5, mean/step 0.504, max step 1.225, smoothness 0.437, speed 0.504

## Colorblind safety (ΔE under simulated CVD)

- Protanopia: ΔE total 103.5; preserves order: yes
- Deuteranopia: ΔE total 106.0; preserves order: yes
- Tritanopia: ΔE total 102.3; preserves order: no

## Related

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