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