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HCL Wizard vs Chroma.js Color Palette Helper: catalog facts
HCL Wizard	Chroma.js Color Palette Helper
Free Used directly in the browser; no pricing is mentioned.	Free Free to use in the browser.
Web	Web
Perception-based HCL color space Color vision deficiency emulator for checking figures	Focuses on perceptually balanced color steps Checks palettes for colorblind safety
Aimed at data visualization more than general design Assumes some familiarity with color space concepts	Specialised for data visualization rather than UI themes Plain interface with little guidance
Web application	Web application
Closed source	Closed source
License not stated	License not stated
No account needed	No account 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.