Crypto exchange UX/UI design

Development of UX/UI Design for Crypto Exchange

Exchange design is a balance between professional information density and accessibility for a broad audience. Binance is overloaded. Robinhood is simplified to the point of losing functions. A good exchange finds balance: novice doesn't get lost, professional isn't bored.

Research and Audience

Before design—define target audience. This radically changes decisions:

Retail trader (main mass): accustomed to mobile apps, doesn't understand order book, fears margin. Needs: simple spot trading, clear balances, obvious P&L.

Active trader: trades for hours, uses indicators, wants fast order placement, hotkeys, customizable layout.

Professional/institutional: needs FIX API, detailed history, data export, sub-accounts.

For most exchanges—multi-tier design: Simple Mode and Advanced Mode, switchable with one click.

Trading Screen—Main Interface

Advanced Mode Layout

┌─────────────────────────────────────────────────────────┐
│  LOGO  [BTC/USDT ▼]  42,150 +2.35%  [Simple | Pro]   ⚙ │
├──────────────┬──────────────────────┬────────────────────┤
│              │                      │                    │
│  ORDER BOOK  │   CANDLESTICK CHART  │   PLACE ORDER      │
│  (DOM)       │   (TradingView)      │   ┌─────────────┐  │
│              │                      │   │ BUY  │ SELL │  │
│  ASK         │                      │   └─────────────┘  │
│  42,152 1.2  │                      │   Limit ▼          │
│  42,151 0.8  │                      │   Price: ______    │
│  42,150 2.1  │                      │   Amount: _____    │
│  ──────────  │                      │   Total: ______    │
│  42,149 1.5  │                      │   [──────────]     │
│  42,148 3.2  │                      │   25% 50% 75% 100% │
│  BID         │                      │   [  Place BUY  ]  │
│              │                      │                    │
├──────────────┴──────────────────────┤                    │
│  TRADE HISTORY    ⟷     MY ORDERS  │                    │
│  42,150 0.5 14:31:22 B             │                    │
│  42,149 1.2 14:31:18 S             │                    │
└─────────────────────────────────────┴────────────────────┘

Order Form—Critical UX Element

Errors in order placement—direct financial losses. Form requirements:

Slider for position size: user selects 25/50/75/100% of available balance with one click. Entering number in field—slow and error-prone.

Confirmation for large orders: if order > 10% of user's daily volume—confirmation dialog.

Decimal precision: BTC with 8 decimals, USDT with 2. Auto-formatting.

Real-time preview: while user enters amount—instantly show Total: 4,215.00 USDT and Fee: 4.22 USDT.

// Real-time calculation in order form
function OrderForm() {
  const [quantity, setQuantity] = useState('');
  const [price, setPrice] = useState('');
  
  const total = useMemo(() => {
    const q = parseFloat(quantity) || 0;
    const p = parseFloat(price) || lastPrice;
    return (q * p).toFixed(2);
  }, [quantity, price, lastPrice]);
  
  const fee = useMemo(() => {
    return (parseFloat(total) * TAKER_FEE_RATE).toFixed(4);
  }, [total]);
  
  return (
    <form>
      <input value={price} onChange={e => setPrice(e.target.value)} placeholder="Price" />
      <input value={quantity} onChange={e => setQuantity(e.target.value)} placeholder="Amount" />
      <BalanceSlider 
        available={availableBalance} 
        price={parseFloat(price) || lastPrice}
        onSelect={(pct) => setQuantity(((availableBalance * pct) / parseFloat(price)).toFixed(8))}
      />
      <div>Total: {total} USDT</div>
      <div>Fee: {fee} USDT</div>
      <button type="submit">Place BUY</button>
    </form>
  );
}

Color Scheme and Typography

Trading Colors

International standard:

• Green (#00B15E or #26A69A): price up, buy buttons, profit
• Red (#E84242 or #EF5350): down, sell buttons, loss

Regional difference: in China and Japan—reverse (red = up). For Asian market need invert option.

Dark vs Light Theme

Traders prefer dark theme: less eye strain with hours of screen time. Light—for mobile in daytime.

:root[data-theme="dark"] {
  --bg-primary: #0D0F12;
  --bg-secondary: #141619;
  --bg-card: #1A1D22;
  --border: #2A2D35;
  --text-primary: #EAECF0;
  --text-secondary: #8B8FA8;
  --green: #00B15E;
  --red: #E84242;
}

:root[data-theme="light"] {
  --bg-primary: #F5F6FA;
  --bg-secondary: #FFFFFF;
  --bg-card: #FFFFFF;
  --border: #E4E7EF;
  --text-primary: #1A1D2E;
  --text-secondary: #6B7087;
}

Monospace Font for Digits

Prices and volumes—monospace only. JetBrains Mono, Roboto Mono, IBM Plex Mono. Otherwise on rate updates columns "twitch"—different digit widths.

.price, .quantity, .total, .balance {
  font-family: 'JetBrains Mono', 'Roboto Mono', monospace;
  font-variant-numeric: tabular-nums;  /* tabular numbers—same width */
}

Markets / Watchlist Screen

Exchange homepage—list of trading pairs:

┌──────────────────────────────────────────────┐
│  🔍 Search pair...    [Favorites] [All] [BTC]│
├──────┬──────────┬─────────┬─────────┬────────┤
│ ★   │ Pair     │  Price  │ 24h %   │ Volume │
├──────┼──────────┼─────────┼─────────┼────────┤
│  ★  │ BTC/USDT │ 42,150  │ +2.35%  │ 1.2B  │
│  ★  │ ETH/USDT │  2,205  │ +1.87%  │ 456M  │
│     │ SOL/USDT │   98.5  │ -0.42%  │  89M  │
└──────┴──────────┴─────────┴─────────┴────────┘

Key details:

• Sparkline chart in row (miniature 7-day graph)—context without click
• Row color changes on update: flash green/red for 300 ms
• Quick navigation to trading screen on row click

Mobile Design

Mobile layout for trading screen—tab-based, not desktop compression:

Tabs: [Positions | Chart | Order Book | Trade]

Each tab—full screen. Order book on mobile shows 10–15 levels (not 50 like desktop). Order form—bottom sheet appearing on "Buy/Sell" click.

Design Process

1. Research (3–5 days): analysis of Binance, OKX, Kraken, Coinbase Advanced, Bybit
2. Information Architecture (3–5 days): screen map, userflows for 5 key scenarios
3. Wireframes (1–2 weeks): all screens for desktop and mobile
4. Design system (1 week): colors, typography, components
5. High-fidelity design (3–4 weeks): all screens with animations and states
6. Prototype & Testing (1 week): Figma prototype + usability testing
7. Developer Handoff (3–5 days): Storybook components, CSS variables, specifications

Full UX/UI design of exchange: 8–12 weeks.