Themes Overview

Important

UnoFeatures: Material, Cupertino, or SimpleTheme — enable these themes by adding <UnoFeatures>Material</UnoFeatures>, <UnoFeatures>Cupertino</UnoFeatures>, or <UnoFeatures>SimpleTheme</UnoFeatures> to your app's .csproj.

Summary

• Material Overview
• Cupertino Overview
• Simple Overview
• Fluent Overview

Cross-cutting guides shared by the theme libraries:

• Seed Color Palette — generate the full Light and Dark color theme from a single seed color (Material and Simple)
• Semantic Styles — design-system-agnostic style names, so you can switch themes without changing your XAML
• Design Tokens — spacing, shape, and density values you can adjust globally
• Lightweight Styling — override individual colors, brushes, and sizes per control without redefining the control template

Uno Themes Styles

Uno Themes is the repository for add-ons enabled through UnoFeatures that can be added to any new or existing Uno solution.

It contains four libraries:

• Uno Themes: a library that contains the base resources, extensions, and helper classes for the different design system libraries
• Uno Material: a library that contains styles following the Material 3 Design System
• Uno Cupertino: a library that contains styles following the Human Interface Guidelines
• Uno Simple: a library that contains styles following the Figma Simple Design System

Material, Cupertino, and Simple libraries help you style your application with a few lines of code including:

• Color system for both Light and Dark themes — customizable wholesale from a single seed color, or key-by-key via overrides, with helper classes such as SemanticThemeHelper for changing colors at runtime
• Styles for existing WinUI controls like Buttons, TextBox, etc.

Fluent Controls Styles

Uno Platform 3.0 and above supports control styles conforming to the Fluent design system.