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iWantHue vs Chroma.js Color Palette Helper: catalog facts
iWantHue	Chroma.js Color Palette Helper
Best for: Data scientists choosing colors for charts with many categories	Best for: Building readable color scales for charts and maps
Free Free to use, with source code on GitHub.	Free Free to use in the browser.
Web	Web
Produces perceptually distinct colors Colorblind-friendly option All 4 strengths for iWantHue Produces perceptually distinct colors Colorblind-friendly option Exports to JSON, CSS and JavaScript in several color spaces Can correct or complete an existing palette	Focuses on perceptually balanced color steps Checks palettes for colorblind safety All 3 strengths for Chroma.js Color Palette Helper Focuses on perceptually balanced color steps Checks palettes for colorblind safety Aimed at charts and maps
Aimed at categorical data colors, not brand or UI palettes Colorblind optimisation is slow	Specialised for data visualization rather than UI themes Plain interface with little guidance
Web application	Web application
Not open source	Not open source
License not stated	License not stated
No account needed	No account needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Sources for iWantHue medialab.github.io/iwanthue Catalog checked September 24, 2026	Official website Full listing and sources Sources for Chroma.js Color Palette Helper gka.github.io/palettes Catalog checked September 23, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.