[derwiki]

Used it in college to downscale an X color image to Y number of colors. Sure, Photoshop does it, but it was informative to do it manually.

[refulgentis]

Google's Material You uses this to initiate color theming

(n.b. Celebi's, note usage of Lab / notHSL, respect Cartesian / polar nature of inputs / outputs, and ask for high-K, 128 is what we went with but it's arbitrary. Can get away with as few as 32 if you're ex. Doing brand color from favicon)

[girvo]

Ooh this is a much nicer approach than the kind of brute force approach we took at work for theme gen