# Vibrant

Canonical URL: https://colorcurio.us/colormaps/tol.vibrant
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, saturated
Stops: 7

## Summary

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

7-class vibrant qualitative palette.

## Perceptual profile (OKLCh)

- Lightness: 0.697 → 0.792 (range 0.243, min 0.549, max 0.792); non-monotonic; midpoint 0.632
- Chroma: min 0.000, max 0.223, mean 0.138
- Hue: 47.0° → 0.0° (span 360.0°), path monotonic-cw; quadrants: orange, blue, azure, red, cyan
- Endpoint temperature: warm → null
- Perceptual ΔE: total 250.5, mean/step 41.747, max step 65.513, smoothness 0.590, speed 1.000

## Colorblind safety (ΔE under simulated CVD)

- Protanopia: ΔE total 174.1; preserves order: no
- Deuteranopia: ΔE total 180.7; preserves order: no
- Tritanopia: ΔE total 253.9; preserves order: no

## Related

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