# Bky

Canonical URL: https://colorcurio.us/colormaps/colorcet.bky
Source type: Colormap
Type: diverging
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/diverging_bky_60-10_c30_n256.csv
Tags: dark-bg, dark-midpoint, diverging
Stops: 256

## Summary

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

## Perceptual profile (OKLCh)

- Lightness: 0.655 → 0.657 (range 0.411, min 0.246, max 0.657); non-monotonic; midpoint 0.246
- Chroma: min 0.001, max 0.182, mean 0.079
- Hue: 250.1° → 86.7° (span 196.6°), path monotonic-cw; quadrants: blue, yellow
- Endpoint temperature: cool → warm
- Perceptual ΔE: total 102.3, mean/step 0.401, max step 0.509, smoothness 0.929, speed 0.401

## Colorblind safety (ΔE under simulated CVD)

- Protanopia: ΔE total 103.3; preserves order: yes
- Deuteranopia: ΔE total 101.8; preserves order: yes
- Tritanopia: ΔE total 101.9; preserves order: yes

## Related

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