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Fluent UI Theme Designer

Free#3 of 34 in Color Palette Generators

Fluent UI Theme Designer: A focused web tool for building accessible Fluent UI semantic themes. Ranked #3 of 34 in Color Palette Generators by our editors (8.7/10); pricing: Open source; best for fluent UI developers creating semantic themes.

8.7/10Editor score

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Fluent UI Theme Designer8.7 Visit site

At a glance

Editor score
8.7 / 10
Pricing
Open source
Best for
Fluent UI developers creating semantic themes
Paid from
Free
Palette methods
Generate
Facts checked
20 Sep 2026

Where it wins
- Generates Fluent UI palettes and semantic theme slots
- Previews themed components and checks contrast ratios
- Exports JavaScript, TypeScript, JSON, PowerShell, and CodePen examples
Where it doesn't
- Does not extract palettes from images
- Does not save palettes
- Focused on Fluent UI React rather than general palette generation

Our verdict on Fluent UI Theme Designer

Fluent UI Theme Designer is a browser-based, open-source theming utility for developers and designers working with Microsoft’s Fluent UI React components. It lets users adjust primary, text, and background colors, then inspect the resulting palette and semantic theme slots. Component previews show how the theme applies to Fluent UI elements, while contrast-ratio checks support accessibility-focused review. It is best suited to teams creating Fluent UI themes rather than users seeking a general-purpose color palette generator.

Its strongest fit is the connection between theme generation and implementation. The tool exports themes as JavaScript or TypeScript code, JSON, and PowerShell, and it can export examples to CodePen. That range supports both code-based workflows and quick demonstrations. The generated palette and semantic slots also make the tool more relevant to Fluent UI development than a basic color picker. Developers who need to translate selected colors into a structured Fluent UI theme have a clear path from adjustment to preview and export.

The tradeoff is its narrow scope. Fluent UI Theme Designer does not extract colors from images, save palettes, or provide a brand color library. It is also a hosted web application focused on Fluent UI React theming, so it should not be the first choice for broad palette exploration across design systems or image-based workflows. Choose it when the target is a custom Fluent UI theme with contrast review and implementation-ready exports; choose a broader palette generator when image extraction, palette management, or cross-system flexibility matters more.

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

Fluent UI Theme Designer pricing

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

See plans on fabricweb.z5.web.core.windows.net

Fluent UI Theme Designer fact sheet

Free plan	Not verified
Paid from	Free
Palette methods	Generate
Image extraction	No
Accessibility checks	Yes
Export formats	Code, JSON, PowerShell
Saved palettes	No
Brand color library	No
Print color support	Not verified
Deployment	Cloud
Platforms	Web
Support	Community, Docs
Built for	Solo, Small business, Mid-market, Enterprise (editorial estimate)
Pricing	Open source
Website	fabricweb.z5.web.core.windows.net
Facts checked	20 Sep 2026

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Fluent UI Theme Designer vs the competition

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Featured on iTechGuides

Fluent UI Theme Designer 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