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0to255 vs UI Colors: catalog facts
0to255	UI Colors
Freemium Can be tried for free; 0to255 Studio offers sign-up for an account.	Freemium Free to use, with a paid Pro upgrade that unlocks extra options.
Web	Web
Shows all lighter and darker variations at once instead of using sliders Color grid clusters similar colors for quick scanning	Generates full Tailwind shade scales from one color Previews palettes on realistic UI examples and shadcn/ui components
Pricing for the Studio version is not clearly stated Needs an internet connection	Some features require a Pro subscription Focused on Tailwind CSS naming and scales
Web application	Web application
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account needed
Needs internet	Needs internet
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 23, 2026

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