color-diff
Implemets the CIEDE2000 color difference algorithm, conversion between RGB and LAB color and mapping all colors in palette X to the closest or most different color in palette Y based on the CIEDE2000 difference.
d3-color-difference
See this [Observable notebook](https://beta.observablehq.com/@danburzo/color-difference-formulas-with-d3-color-difference) for a demonstration.
erte
String difference with colour for Node.js and ANSI formatting. [PUBLIC]
good-friends-colors
Find the color difference between the two colors and determine if they are similar