Compare software

HCL Wizard vs Leonardo: catalog facts
HCL Wizard	Leonardo
Free Used directly in the browser; no pricing is mentioned.	Free Free to use in the browser, with source published on GitHub.
Web	Web
Perception-based HCL color space Color vision deficiency emulator for checking figures	Generates swatches from target contrast ratios Adaptive themes make dark mode variants quick
Aimed at data visualization more than general design Assumes some familiarity with color space concepts	Aimed at design systems work, more than a simple palette picker needs Contrast-driven approach takes some learning
Web application	Web application
Closed source	Open source
License not stated	License not stated
No account 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 24, 2026	Official website Full listing and sources Checked September 23, 2026

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