RikkaUI

The shadcn/ui of Compose Multiplatform.

Beautiful, production-ready components. Zero Material3. Full ownership.

Live Demo & Docs  •  Quick Start  •  Theming  •  Components

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The Problem

Every Compose developer is stuck between two bad options: fight Material3's opinions on every screen, or build everything from scratch. There's been nothing in between.

RikkaUI is the third option. 40+ production-ready components built on compose.foundation only — no Material3 anywhere. Copy the source into your project, own it fully, and customize without limits.

The same philosophy shadcn/ui brought to the web, now for Compose Multiplatform.

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Quick Start

Option 1 — Gradle dependency (fastest, great for prototyping)

// build.gradle.kts
dependencies {
    implementation("dev.rikkaui:foundation:0.1.0") // theme system
    implementation("dev.rikkaui:components:0.1.0") // all components
}

RikkaTheme {
    Button(text = "Get Started", onClick = { })
}

Works out of the box for native Android projects — no KMP setup needed. For Compose Multiplatform, add to your commonMain source set.

Option 2 — CLI (copy-paste with a command, full ownership)

curl -fsSL https://rikkaui.dev/install.sh | bash

Then in your project:

rikkaui init    # set up your project for RikkaUI
rikkaui add button card input   # copy components into your source
rikkaui list    # browse all available components

Components are copied directly into your source. You own the code — no version conflicts, no breaking updates, no opinions you can't change.

Only foundation is required as a Gradle dependency — it provides the theme system your copied components build on.

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Theme System

One line changes your entire app's personality:

// Style presets — shapes, spacing, motion, type scale
RikkaTheme(preset = RikkaStylePreset.Default) { }  // Balanced
RikkaTheme(preset = RikkaStylePreset.Nova) { }     // Sharp & dense
RikkaTheme(preset = RikkaStylePreset.Vega) { }     // Rounded & bouncy
RikkaTheme(preset = RikkaStylePreset.Aurora) { }   // Spacious & large
RikkaTheme(preset = RikkaStylePreset.Nebula) { }   // Square & tight

// Color palettes
RikkaTheme(palette = RikkaPalette.Zinc) { }    // Pure & clean
RikkaTheme(palette = RikkaPalette.Slate) { }   // Cool blue tint
RikkaTheme(palette = RikkaPalette.Stone) { }   // Warm earth tint

// Or just the defaults
RikkaTheme { }

5 palettes × 7 accent colors × light/dark mode. Every token is overridable.

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Components

40+ components, all built on compose.foundation only.

Category	Components
Layout	Card, Separator, Scaffold, Scroll Area, Accordion, Collapsible, Table, List
Forms	Button, Icon Button, Input, Textarea, Select, Checkbox, Radio, Toggle, Toggle Group, Slider, Label
Data Display	Text, Badge, Avatar, Progress, Skeleton, Spinner, Kbd, Icon
Navigation	Tabs, Navigation Bar, Top App Bar, Breadcrumb, Pagination
Feedback	Dialog, Alert Dialog, Sheet, Toast, Alert, Tooltip, Popover, Hover Card
Overlay	Dropdown Menu, Context Menu

Full docs and live previews at rikkaui.dev.

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Platform Support

Platform	Status
Android	✅ Stable
iOS	✅ Stable
Desktop (JVM)	✅ Stable
Web (WasmJs)	✅ Stable

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RikkaUI (六花) — composing elements into harmony.