# Bright

Canonical URL: https://colorcurio.us/colormaps/tol.bright
Source type: Colormap
Type: categorical
Collection: tol
Attribution: Paul Tol, "Colour Schemes" (SRON/EPS/TN/09-002)
License: BSD-3-Clause
Source: https://sronpersonalpages.nl/~pault/
Tags: categorical, cvd-friendly
Stops: 7

## Summary

Bright is a categorical colormap from the tol collection. Inspect its perceptual lightness, chroma, and hue profile on colorcurio.us.

7-class qualitative palette.

## Perceptual profile (OKLCh)

- Lightness: 0.556 → 0.792 (range 0.278, min 0.519, max 0.797); non-monotonic; midpoint 0.785
- Chroma: min 0.000, max 0.169, mean 0.119
- Hue: 250.0° → 0.0° (span 360.0°), path folded; quadrants: blue, red, green, chartreuse, azure, rose
- Endpoint temperature: cool → null
- Perceptual ΔE: total 291.5, mean/step 48.590, max step 68.910, smoothness 0.734, speed 1.000

## Colorblind safety (ΔE under simulated CVD)

- Protanopia: ΔE total 188.1; preserves order: no
- Deuteranopia: ΔE total 187.5; preserves order: no
- Tritanopia: ΔE total 335.5; preserves order: no

## Related

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