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Head-to-head · Color Palette Generators

Coolors vs Fluent UI Theme Designer

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Coolors #1 in Color Palette Generators 9.4/10 Free plan Free plan✓ 4 of 5 features Visit Coolors
Fluent UI Theme Designer #3 in Color Palette Generators 8.7/10 Open source ✓ 1 of 5 features Visit site

Coolors leads on 3 checks, Fluent UI Theme Designer on 0, and 2 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreCoolors · 9.4/10
  • Free planonly Coolors
  • Most featuresCoolors · 4 of 5

Coolors scores higher on our rubric for color palette generators: 9.4 against 8.7 out of 10; our editors rank them #1 and #3.

On palette methods, Coolors gives you Both where Fluent UI Theme Designer offers Generate. Coolors offers image extraction; Fluent UI Theme Designer doesn't. Coolors offers saved palettes; Fluent UI Theme Designer doesn't. Coolors offers brand color library; Fluent UI Theme Designer doesn't.

Coolors is the better fit for most designers needing an all-round palette tool. Fluent UI Theme Designer is the better fit for fluent UI developers creating semantic themes.

  • Coolors fits best

    Most designers needing an all-round palette tool

  • Fluent UI Theme Designer fits best

    Fluent UI developers creating semantic themes

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Side by side

Feature Coolors 9.4/10 Visit ↗ Fluent UI Theme Designer 8.7/10 Visit ↗
At a glance
Editor score 9.4 8.7
Ranking #1 in Color Palette Generators #3 in Color Palette Generators
Best for Most designers needing an all-round palette tool Fluent UI developers creating semantic themes
Pricing model Free plan + paid Free
Starting price $3/mo Open source
Free plan ✓ (best) Not checked yet
Free trial — —
Deployment Cloud, Mobile, Browser extension Cloud
Platforms Web, iOS, Chrome extension Web
Support Email, Docs Community, Docs
Built for Solo, Small business, Mid-market Solo, Small business, Mid-market, Enterprise
Features Coolors 4/5 · Fluent UI Theme Designer 1/5
Image extraction ✓ (best) —
Accessibility checks ✓ ✓
Saved palettes ✓ (best) —
Brand color library ✓ (best) —
Print color support Not checked yet Not checked yet
Specs
Palette methods Both Generate
Export formats PDF, image, CSS, ASE, SVG, code, Tailwind, Procreate Code, JSON, PowerShell
Our review
Pros
  • Generates, browses, extracts, checks, and visualizes color palettes
  • Exports to PDF, image, CSS, ASE, SVG, code, Tailwind, and Procreate
  • Works across web, iOS, Chrome, Figma, and Adobe applications
  • Generates Fluent UI palettes and semantic theme slots
  • Previews themed components and checks contrast ratios
  • Exports JavaScript, TypeScript, JSON, PowerShell, and CodePen examples
Cons
  • The Free plan includes only limited saved palettes
  • Image color picking and contrast checks require Pro
  • Advanced export options and color libraries require Pro
  • Does not extract palettes from images
  • Does not save palettes
  • Focused on Fluent UI React rather than general palette generation
Our verdict

Coolors is a color palette tool for designers and other creative professionals. It combines palette generation and discovery with image color extraction, contrast and accessibility checking, and palette visualization on designs. Users can…

Read the review →

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…

Read the review →
  1. CoolorsColor Palette Generators 9.4Free plan
  2. Fluent UI Theme DesignerColor Palette Generators 8.7Open source

Strengths and trade-offs

  • Coolors — where it wins

    • Generates, browses, extracts, checks, and visualizes color palettes
    • Exports to PDF, image, CSS, ASE, SVG, code, Tailwind, and Procreate
    • Works across web, iOS, Chrome, Figma, and Adobe applications

    Where it doesn't

    • The Free plan includes only limited saved palettes
    • Image color picking and contrast checks require Pro
    • Advanced export options and color libraries require Pro

  • Fluent UI Theme Designer — 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
  • Coolors9.4/10 · Free plan

    A broad palette toolkit with useful free features and a $3 monthly Pro plan.

    Visit CoolorsFull verdict →
  • Fluent UI Theme Designer8.7/10 · Open source

    A focused web tool for building accessible Fluent UI semantic themes.

    Visit siteFull verdict →

More comparisons

All color palette generators comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update