RainbowKit

RainbowKit Overview¶

RainbowKit is a wallet connection component library designed specifically for React applications, providing a beautiful, responsive, and highly customizable wallet connection UI. Developed by the Rainbow team, RainbowKit is built on top of WalletConnect and Wagmi, offering developers the industry's best wallet connection experience. It supports over 100 wallets and comes with built-in dark mode, connection animations, and comprehensive error handling, making Web3 application user experience comparable to Web2 applications.

Official Website: https://www.rainbowkit.com/

Core Features¶

1. Out-of-the-Box UI¶

Beautiful wallet connection interface:

Wallet list: Automatically displays installed and recommended wallets
Responsive design: Perfectly adapted for desktop and mobile
Dark mode: Built-in light and dark themes
Animations: Smooth connection and interaction animations
Brand customization: Supports custom colors, border radius, and fonts

2. Extensive Wallet Support¶

Broad wallet ecosystem:

Injected wallets: MetaMask, Coinbase Wallet, Brave Wallet
WalletConnect: Supports all WalletConnect-compatible wallets
Mobile wallets: Rainbow, Trust Wallet, Zerion
Hardware wallets: Ledger Live (via WalletConnect)
Smart wallets: Safe, Argent

3. Complete Feature Set¶

All the features needed for development:

Connect button: One-click integration connect button component
Account modal: Popup displaying account information and actions
Network switching: Convenient network switching UI
Transaction status: Displays pending transactions
Disconnect: Clear disconnection flow
Error handling: User-friendly error messages and retry mechanisms

4. Deep Wagmi Integration¶

Seamless integration with Wagmi:

Hooks integration: Use Wagmi Hooks to fetch on-chain data
Type safety: Full TypeScript type support
State management: Automatic connection state management
Chain configuration: Shares chain configuration with Wagmi
Caching mechanism: Leverages Wagmi's query cache

Quick Start¶

Installation¶

npm install @rainbow-me/rainbowkit wagmi viem@2.x @tanstack/react-query

Basic Configuration¶

import '@rainbow-me/rainbowkit/styles.css'
import { getDefaultConfig, RainbowKitProvider } from '@rainbow-me/rainbowkit'
import { WagmiProvider } from 'wagmi'
import { mainnet, polygon, optimism, arbitrum } from 'wagmi/chains'
import { QueryClientProvider, QueryClient } from '@tanstack/react-query'

const config = getDefaultConfig({
  appName: 'My RainbowKit App',
  projectId: 'YOUR_WALLETCONNECT_PROJECT_ID',
  chains: [mainnet, polygon, optimism, arbitrum],
  ssr: true // For Next.js SSR applications
})

const queryClient = new QueryClient()

function App() {
  return (
    <WagmiProvider config={config}>
      <QueryClientProvider client={queryClient}>
        <RainbowKitProvider>
          {/* Your App */}
        </RainbowKitProvider>
      </QueryClientProvider>
    </WagmiProvider>
  )
}

Adding the Connect Button¶

import { ConnectButton } from '@rainbow-me/rainbowkit'

export function Header() {
  return (
    <header>
      <h1>My **DApp**</h1>
      <ConnectButton />
    </header>
  )
}

Custom Configuration¶

1. Theme Customization¶

Custom theme colors:

import { RainbowKitProvider, darkTheme } from '@rainbow-me/rainbowkit'

<RainbowKitProvider
  theme={darkTheme({
    accentColor: '#7b3ff2',
    accentColorForeground: 'white',
    borderRadius: 'medium',
    fontStack: 'system',
    overlayBlur: 'small'
  })}
>
  {/* ... */}
</RainbowKitProvider>

2. Custom Wallet List¶

Configure displayed wallets:

import { connectorsForWallets } from '@rainbow-me/rainbowkit'
import {
  metaMaskWallet,
  rainbowWallet,
  walletConnectWallet,
  coinbaseWallet
} from '@rainbow-me/rainbowkit/wallets'

const connectors = connectorsForWallets(
  [
    {
      groupName: 'Recommended',
      wallets: [rainbowWallet, metaMaskWallet]
    },
    {
      groupName: 'Other',
      wallets: [walletConnectWallet, coinbaseWallet]
    }
  ],
  { appName: 'My App', projectId: 'YOUR_PROJECT_ID' }
)

const config = createConfig({
  connectors,
  chains: [mainnet],
  // ...
})

3. Custom Connect Button¶

Customize button style and content:

import { ConnectButton } from '@rainbow-me/rainbowkit'

<ConnectButton.Custom>
  {({
    account,
    chain,
    openAccountModal,
    openChainModal,
    openConnectModal,
    mounted
  }) => {
    const connected = mounted && account && chain

    return (
      <div>
        {!connected ? (
          <button onClick={openConnectModal}>Connect Wallet</button>
        ) : chain.unsupported ? (
          <button onClick={openChainModal}>Wrong Network</button>
        ) : (
          <div>
            <button onClick={openChainModal}>
              {chain.name}
            </button>
            <button onClick={openAccountModal}>
              {account.displayName}
            </button>
          </div>
        )}
      </div>
    )
  }}
</ConnectButton.Custom>

4. Chain Configuration¶

Custom chain icons and information:

const config = getDefaultConfig({
  appName: 'My App',
  projectId: 'YOUR_PROJECT_ID',
  chains: [
    {
      ...mainnet,
      iconUrl: 'https://example.com/ethereum.png'
    },
    {
      ...polygon,
      iconUrl: 'https://example.com/polygon.png'
    }
  ]
})

Using Wagmi Hooks¶

RainbowKit works in conjunction with Wagmi:

import { useAccount, useBalance, useEnsName } from 'wagmi'
import { ConnectButton } from '@rainbow-me/rainbowkit'

function Profile() {
  const { address, isConnected } = useAccount()
  const { data: balance } = useBalance({ address })
  const { data: ensName } = useEnsName({ address })

  if (!isConnected) {
    return <ConnectButton />
  }

  return (
    <div>
      <p>Address: {ensName ?? address}</p>
      <p>Balance: {balance?.formatted} {balance?.symbol}</p>
    </div>
  )
}

Advanced Features¶

1. Custom Avatars¶

Use ENS avatars or custom avatars:

<RainbowKitProvider
  avatar={({ address, ensImage, size }) => {
    return ensImage ? (
      <img src={ensImage} width={size} height={size} />
    ) : (
      <div style={{ width: size, height: size }}>
        {/* Custom avatar */}
      </div>
    )
  }}
>

2. Custom Chains¶

Add custom chains:

const myCustomChain = {
  id: 12345,
  name: 'My Custom Chain',
  iconUrl: 'https://example.com/icon.png',
  iconBackground: '#fff',
  nativeCurrency: { name: 'Custom', symbol: 'CUSTOM', decimals: 18 },
  rpcUrls: {
    default: { http: ['https://rpc.example.com'] }
  },
  blockExplorers: {
    default: { name: 'Explorer', url: 'https://explorer.example.com' }
  }
}

3. Internationalization¶

Multi-language support:

import { RainbowKitProvider } from '@rainbow-me/rainbowkit'

<RainbowKitProvider locale="zh-CN">
  {/* Chinese interface */}
</RainbowKitProvider>

Programmatic modal control:

import { useConnectModal, useAccountModal, useChainModal } from '@rainbow-me/rainbowkit'

function MyComponent() {
  const { openConnectModal } = useConnectModal()
  const { openAccountModal } = useAccountModal()
  const { openChainModal } = useChainModal()

  return (
    <>
      {openConnectModal && (
        <button onClick={openConnectModal}>
          Open Connect Modal
        </button>
      )}
      {openAccountModal && (
        <button onClick={openAccountModal}>
          Open Account Modal
        </button>
      )}
      {openChainModal && (
        <button onClick={openChainModal}>
          Open Chain Modal
        </button>
      )}
    </>
  )
}

Use Cases¶

DeFi applications: DEX, lending platforms, yield aggregators
NFT marketplaces: NFT trading platforms, minting websites
DAO tools: Governance platforms, voting applications
Web3 games: On-chain games and GameFi applications
Social applications: Decentralized social networks
Utility platforms: Blockchain explorers, analytics tools

Best Practices¶

1. Performance Optimization¶

Code splitting: Dynamically import RainbowKit to reduce initial load
SSR configuration: Properly configure server-side rendering
Caching strategy: Leverage Wagmi's query cache
Lazy loading: Defer loading of wallet connection components

2. User Experience¶

Clear guidance: Provide wallet connection instructions
Error handling: User-friendly error messages
Status feedback: Display loading and transaction states
Mobile optimization: Ensure smooth mobile experience

3. Security¶

Network validation: Check the network the user is connected to
Signature verification: Verify user-signed messages
Minimal permissions: Only request necessary permissions
User confirmation: Require secondary confirmation for important operations

Comparison with Other Solutions¶

Feature	RainbowKit	Web3Modal	ConnectKit
UI Quality	Excellent	Good	Good
Wallet Support	100+	300+	50+
Customization	High	Medium	High
Documentation	Excellent	Good	Good
TypeScript	Complete	Complete	Complete
React Optimization	Deep Integration	General	Deep Integration
Maintenance Status	Active	Active	Active

Ecosystem¶

Official Resources¶

Website: https://www.rainbowkit.com/
GitHub: https://github.com/rainbow-me/rainbowkit
Documentation: Complete API documentation and examples
Discord: Active community support

Wagmi: React Hooks for Ethereum
Viem: TypeScript Ethereum library
WalletConnect: Wallet connection protocol
Rainbow Wallet: Mobile wallet

Wagmi: RainbowKit's underlying library, providing React Hooks
WalletConnect: Wallet connection protocol
Viem: Lightweight TypeScript Ethereum library
TanStack Query: Data fetching and caching library
MetaMask: The most popular Ethereum wallet

Summary¶

RainbowKit has become the go-to solution for wallet connections in React Web3 applications by providing beautiful UI components and an excellent development experience. Beyond its outstanding appearance, it offers a complete feature set, good customizability, and deep integration with Wagmi. Whether for rapid prototyping or production-grade applications, RainbowKit delivers a consistently high-quality user experience. For Web3 developers who pursue the ultimate user experience, RainbowKit is an exceptional tool.