# Acton

Canonical URL: https://colorcurio.us/colormaps/crameri.acton
Source type: Colormap
Type: sequential
Collection: crameri
Attribution: Crameri 2018, Scientific Colour Maps (https://www.fabiocrameri.ch/colourmaps/)
License: CC-BY-4.0
Source: https://www.fabiocrameri.ch/colourmaps/
Tags: scientific, perceptually-uniform, purple
Stops: 256

## Summary

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

Sequential PuPi. Sourced from ScientificColourMaps8/acton/acton.txt.

## Perceptual profile (OKLCh)

- Lightness: 0.231 → 0.947 (range 0.716, min 0.231, max 0.947); monotonic; midpoint 0.594
- Chroma: min 0.021, max 0.121, mean 0.078
- Hue: 302.6° → 301.6° (span 64.7°), path monotonic-ccw; quadrants: magenta, violet, rose
- Endpoint temperature: cool → neutral
- Perceptual ΔE: total 86.8, mean/step 0.340, max step 0.351, smoothness 0.987, speed 0.340

## Colorblind safety (ΔE under simulated CVD)

- Protanopia: ΔE total 68.3; preserves order: yes
- Deuteranopia: ΔE total 71.6; preserves order: yes
- Tritanopia: ΔE total 105.1; preserves order: yes

## Related

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