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Viz Palette vs iWantHue: catalog facts
Viz Palette	iWantHue
Free Free to use in the browser.	Free Free to use, with source code on GitHub.
Web	Web
Simulates several color vision deficiencies Flags colors that are hard to distinguish at different sizes	Produces perceptually distinct colors Colorblind-friendly option
Focused on data visualization palettes only Does not generate palettes itself; links to other tools for that	Aimed at categorical data colors, not brand or UI palettes Colorblind optimisation is slow
Web application	Web application
Closed source	Closed source
License not stated	License not stated
No account needed	No account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 24, 2026

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