Compare software

0to255 vs K’uychi: catalog facts
0to255	K’uychi
Freemium Can be tried for free; 0to255 Studio offers sign-up for an account.	Free Free and open source under Blue Oak Model License 1.0.0.
Web	Linux
Shows all lighter and darker variations at once instead of using sliders Color grid clusters similar colors for quick scanning	Generates lighter and darker shades from a base color Uses OKLab for perceptual uniformity
Pricing for the Studio version is not clearly stated Needs an internet connection	Linux desktop application
Web application	Downloadable app
Closed 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
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 8, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.