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Harmonizer vs Color Studio: catalog facts
Harmonizer	Color Studio
Free Free to use in the browser.	Free Free and open source under the Apache 2.0 licence.
Web	macOS
Uses OKLCH for perceptually even palettes Keeps contrast consistent across hues	Focuses on coherent palettes rather than single colors Considers accessibility when building themes
Aimed at UI palettes rather than general color exploration Little documentation visible on the site	No formal releases published on GitHub Small project maintained by one developer
Web application	Downloadable app
Closed source	Open source
License not stated	License: Apache-2.0
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 Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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