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UI Palette Generator

Free#13 of 34 in Color Palette GeneratorsAI Color Palette Generators

UI Palette Generator: A focused web tool for semantic themes, contrast checks, previews, and developer-ready exports. Ranked #13 of 34 in Color Palette Generators by our editors (7.0/10); pricing: Open source; best for open-source teams designing accessible UI themes.

7.0/10Editor score

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UI Palette Generator7.0 Visit site

At a glance

Editor score
7.0 / 10
Pricing
Open source
Best for
Open-source teams designing accessible UI themes
Paid from
Free
Palette methods
Generate
Facts checked
20 Sep 2026

Where it wins
- WCAG 2.2 AA and APCA contrast reporting
- Light and dark semantic theme generation with refinement
- CSV, Penpot JSON, and CSS variable exports
Where it doesn't
- Does not extract palettes from images
- Does not provide palette saving
- Limited integration breadth beyond its export formats

Our verdict on UI Palette Generator

UI Palette Generator is a browser-based, open-source tool for teams designing semantic color systems for enterprise interfaces. Starting with a seed color, it generates light and dark theme palettes, then presents the results through representative UI component previews. The workflow is centered on accessible theme design: users can review WCAG 2.2 AA and APCA contrast results, adjust token settings, and refine palettes with contrast fixing. Its web platform and static deployment model suit teams that want a focused tool they can access in a browser or host on a static web server.

Accessibility is the product’s clearest strength. Contrast reporting covers both WCAG 2.2 AA and APCA, while palette refinement helps address contrast issues during design rather than after export. USWDS color alignment adds a standards-oriented option for teams working with that color system. Light and dark rendering, paired with UI previews in both modes, also gives designers a practical way to inspect semantic tokens across interface states. Teams choosing this tool should value accessibility analysis and theme structure more than broad asset discovery or a large connected workflow.

Exports make the generated palettes useful across design and development tasks. UI Palette Generator supports CSV, Penpot-compatible JSON, and CSS variable export, giving teams paths into data workflows, Penpot, and implementation code. However, its scope remains narrow: it does not extract colors from images, provide palette saving, or offer broad integrations beyond its listed export formats. Open-source teams building accessible light and dark UI themes should find the focus appropriate, while teams needing image-based inspiration, persistent palette management, or wider ecosystem connectivity should choose another tool.

Your product? Our editors can test UI Palette Generator in depth and publish a review, labelled as paid · from $149/mo →

UI Palette Generator pricing

Plans Open sourceFree Free to use — no paid tier required for the core job.

See plans on mgifford.github.io

UI Palette Generator fact sheet

Free plan	Not verified
Paid from	Free
Palette methods	Generate
Image extraction	Not verified
Accessibility checks	Yes
Export formats	CSV, Penpot native JSON, CSS variables
Saved palettes	Not verified
Brand color library	Not verified
Print color support	Not verified
Deployment	Cloud, Self-hosted
Platforms	Web
Support	Community
Built for	Enterprise (editorial estimate)
Pricing	Open source
Website	mgifford.github.io
Facts checked	20 Sep 2026

Alternatives to UI Palette Generator

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Also Ranked In

UI Palette Generator is ranked in 2 of our directories.

#14AI Color Palette Generators22 tools ranked

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Featured on iTechGuides

UI Palette Generator is listed in our Color Palette Generators directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Last updated 7 Oct 2026 · How we research and update