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Leonardo vs Color Studio: catalog facts
Leonardo	Color Studio
Free Free to use in the browser, with source published on GitHub.	Free Free and open source under the Apache 2.0 licence.
Web	macOS
Generates swatches from target contrast ratios Adaptive themes make dark mode variants quick	Focuses on coherent palettes rather than single colors Considers accessibility when building themes
Aimed at design systems work, more than a simple palette picker needs Contrast-driven approach takes some learning	No formal releases published on GitHub Small project maintained by one developer
Web application	Downloadable app
Open 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 September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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