# Bgyw

Canonical URL: https://colorcurio.us/colormaps/colorcet.bgyw
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_bgyw_15-100_c68_n256.csv
Tags: perceptually-uniform, cartographic, bathymetry
Stops: 256

## Summary

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

## Perceptual profile (OKLCh)

- Lightness: 0.292 → 1.000 (range 0.708, min 0.292, max 1.000); monotonic; midpoint 0.618
- Chroma: min 0.000, max 0.239, mean 0.165
- Hue: 272.6° → 197.2° (span 167.4°), path folded; quadrants: violet, blue, azure, cyan, mint, green, chartreuse
- Endpoint temperature: cool → null
- Perceptual ΔE: total 152.4, mean/step 0.598, max step 3.418, smoothness 0.184, speed 0.598

## Colorblind safety (ΔE under simulated CVD)

- Protanopia: ΔE total 138.2; preserves order: no
- Deuteranopia: ΔE total 136.8; preserves order: no
- Tritanopia: ΔE total 110.1; preserves order: yes

## Related

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