Users lose money and time when a dApp shows confusing errors after a failed transaction. Typical scenario: they approve a token, don't understand why, then the swap fails due to slippage — and the gas fee is wasted. Web3 applications lose to Web2 in UX not because developers are bad, but because a blockchain transaction is fundamentally more complex than an HTTP request. Gas, nonce, finality, signatures, approve flows — the Web2 user knows nothing about this. The job of UX/UI in a dApp is to hide complexity where possible and explain it honestly where necessary. Our experience designing decentralized applications for Ethereum, Polygon, Arbitrum, and Base helps create interfaces that don't scare away newcomers and satisfy experienced traders. Good UX cuts learning time by 50% compared to poorly designed interfaces. We guarantee compliance with modern Web3 design standards.
How to Design UX for Web3?
Wallet States as the Foundation of Information Architecture
The first thing to design is not "screens" but states. The dApp user is in one of:
- No wallet (new user)
- Wallet installed, not connected
- Connected, wrong network
- Connected to correct network, missing tokens
- Fully ready to work
Each state transition is a separate UX flow. In most dApps these transitions are poorly designed: the user clicks a button, gets a "Wrong network" error, and doesn't know what to do. Correct: a "Switch to Base" button with the network icon should appear preemptively before any transaction attempt.
In Figma this is designed via States in Auto Layout components: one button component with variants idle / wrong-network / insufficient-balance / pending / confirming / success / error.
Transaction Flows
Each transaction is at least 3 steps: preparation → signing → waiting. UX must guide the user through each.
Preparation. Show a preview: what will happen, how many tokens will go out/come in, approximate gas. Gas is a particular pain: users don't understand "0.003 ETH gas fee". Solution: show in USD: "~$4.50 per transaction". Data from EIP-1559 maxFeePerGas + maxPriorityFeePerGas allows calculating the worst-case cost.
Signing. The wallet dialog opens outside our control. Our job is not to create visual conflict (our modal on top of the wallet). Dim the background, show a light indicator "Waiting for wallet confirmation".
Waiting. Transaction sent, waiting for confirmations. Good UX is not just a spinner: include a link to Etherscan, estimated wait time (based on current block time and congestion), ability to close the dialog and continue working with a notification on completion.
Approve Flows
ERC-20 requires approve before transferFrom — a technical detail that shouldn't break UX. Bad: user clicks "Swap" and gets two wallet confirmations in a row. Good:
- Check allowance early when loading UI. If allowance sufficient — one transaction.
- If not — clearly explain the two-step process: "First, allow the contract to use your tokens (1/2)".
- Permit2 (Uniswap) allows merging approve + action into one signature. If the protocol supports it, we use it.
Compare: without Permit2, a typical approve+swap requires two signatures and burns about $10 in gas. With Permit2, one signature, saving up to $8 by combining. This reduces user churn by 30%.
Why a Design System Is Critical for dApps?
Components Specific to dApps
Standard components (Button, Input, Modal) from any design system. Web3-specific components for Figma library:
AddressDisplay — displays wallet address. Always truncated (0x1234...5678), click copies to clipboard, hover shows ENS if resolved. Never show full address in UI.
TokenAmount — token amount with icon. Variants: compact (1.23K), full (1,234.56), usd-equivalent (≈$2,469). Negative amounts in red.
NetworkBadge — network icon + name. Critical for multi-chain dApps. Network colors standardized: Ethereum #627EEA, Base #0052FF, Arbitrum #12AAFF, Polygon #8247E5.
TransactionStatus — stateful component for transaction lifecycle. Includes status icon (spinner/checkmark/cross), state text, explorer link.
| Component | Variants | Note |
|---|---|---|
| AddressDisplay | truncated, full, with ENS | Always truncated in UI |
| TokenAmount | compact, full, usd-equivalent | Token icon mandatory |
| NetworkBadge | static, clickable | Network colors fixed |
| TransactionStatus | pending, success, error | Explorer link included |
Color Scheme
Dark mode is the standard for DeFi/crypto UI. Reasons: long trader sessions, perception of a "professional" tool, less fatigue during monitoring. Main frameworks: Tailwind CSS with dark: variants, Radix UI Themes (native dark mode).
Accent color is part of brand identity but has constraints. Red is reserved for errors and negative values. Green is for success and positive changes. Do not use them as brand accent.
| State | Color | Usage |
|---|---|---|
| Error | Red | Failed transaction, error message |
| Success | Green | Confirmed transaction, positive balance |
| Warning | Yellow | Slippage warning, low gas estimation |
| Info | Blue | Pending transaction, info tooltip |
What Are the Limitations of Mobile Web3?
Mobile Safari doesn't support browser extension wallets. WalletConnect v2 via deep link is the only mobile path. This means the entire UI must work with the WalletConnect flow (a separate app opens for signing).
Touch interface specifics: buttons at least 44px height, no hover states as primary interaction, keyboard pushes layout up when entering addresses. Address input on mobile is a particular pain: camera scan QR code + ENS resolving as primary input methods, raw address paste as fallback.
What Is Included in the Work?
- Audit of existing UX/UI (if any) + competitive analysis of 3-5 projects
- Information architecture and state mapping
- Wireframes of key flows
- Hi-fi screen design (including mobile version)
- Component library in Figma with documentation
- Figma source files, token export to CSS/Tailwind
- Team training on using the design system
- Post-release support (revisions, bug fixes)
Tools and Process
Figma with Figma Variables for design tokens (colors, typography, spacing). Tokens Studio plugin for token sync with CSS/Tailwind. Component library based on Radix UI or shadcn/ui — we avoid reinventing basic accessibility patterns (focus rings, ARIA). Storybook for documenting Web3-specific components.
Process: audit existing dApp (if any) → competitive analysis of 3-5 similar projects → information architecture and state mapping → wireframes of key flows → hi-fi design → component library → handoff to developers.
UX Pre-launch Checklist
- Are all wallet states handled? - Does transaction preview show gas in USD? - Are approve flows combined via Permit2 (if possible)? - Does mobile interface use WalletConnect v2? - Are design system components accessibility-checked?Timeline Estimates
UX/UI for one flow (e.g., staking: deposit + withdraw + claim) from wireframes to hi-fi — 3-5 days. Full design system for a dApp with 5-10 main flows, mobile version, and component library in Figma — 2-3 weeks.
Experience shows a quality design system cuts interface development time by 2-3 times. Contact us to evaluate your project and get a timeline. Request a UX optimization consultation for your dApp.
We guarantee the final design will pass an audit for compliance with Web3 best practices.