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Scale vs K’uychi: catalog facts
Scale	K’uychi
Best for: Designers building tint and shade scales for a UI color system	Best for: Designers and developers building color palettes
Free Free to use in the browser.	Free Free and open source under Blue Oak Model License 1.0.0.
Web	Linux
Builds a full scale from one base color Adjustable hue and saturation curves across the scale All 3 strengths for Scale Builds a full scale from one base color Adjustable hue and saturation curves across the scale Runs in the browser with nothing to install	Generates lighter and darker shades from a base color Uses OKLab for perceptual uniformity All 3 strengths for K’uychi Generates lighter and darker shades from a base color Uses OKLab for perceptual uniformity Copies hexadecimal values for use in other tools
Focused on scales only, not full multi-color palettes Little documentation on the page itself	Linux desktop application
Web application	Downloadable app
Not open source	Open source
License not stated	License: BlueOak-1.0.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Sources for Scale hihayk.github.io/scale Catalog checked September 24, 2026	Official website Full listing and sources Sources for K’uychi codeberg.org/nyx_lyb3ra/kuychi Catalog checked October 8, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.