Designing Better UIs with AI: Beyond "Make It Pretty"

AI can generate a working UI in seconds. But "working" and "well-designed" are different things. Here's how to prompt for UIs that actually look good.

Why AI UIs Look Generic

Most AI-generated interfaces share the same problems:

• Everything looks the same. Gray backgrounds, rounded corners, blue buttons. Functional, but forgettable.
• Spacing is inconsistent. Padding and margins feel random because the AI doesn't have a spacing system.
• Hierarchy is flat. Every element gets the same visual weight, so nothing stands out.
• States are missing. No hover effects, no loading states, no empty states, no error states.

These aren't hard to fix — you just need to ask for them.

The Specific Prompt Framework

Instead of "make a dashboard," try this structure:

1. Describe the Layout

"Two-column layout: narrow sidebar on the left (240px, fixed), main content area on the right. Sidebar has navigation links with icons. Main area has a header bar and a card grid below."

2. Specify the Visual System

"Use a dark theme with neutral-950 background. Purple-400 as the accent color. 4px border radius on small elements, 12px on cards. Use 4/8/12/16/24px spacing increments only."

3. Call Out States

"Include: hover states on all interactive elements, active/selected state on nav links, loading skeleton for cards, empty state when no data exists."

4. Reference Specifics

"The sidebar should feel like Linear's sidebar. Cards should have a subtle border that glows purple on hover, like Vercel's dashboard."

Referencing real products gives AI a concrete target instead of guessing.

Five Design Principles for AI Prompts

1. Contrast Creates Hierarchy

Tell AI what's important:

"The main metric number should be 48px bold white. The label below should be 14px neutral-400. The supporting stats should be smaller and lighter."

Without explicit hierarchy, AI makes everything the same size.

2. Whitespace Is a Feature

"Use generous padding — at least 24px inside cards, 32px between sections. The layout should feel spacious, not cramped."

AI tends to pack elements tightly. Explicitly requesting whitespace improves every design.

3. Limit Your Palette

"Only use these colors: neutral-950 (background), neutral-900 (cards), neutral-800 (borders), neutral-400 (secondary text), white (primary text), purple-400 (accent), green-400 (success), red-400 (error)."

A constrained palette prevents the rainbow effect of AI using a different color for every element.

4. Animation Should Be Subtle

"Add transition-all duration-200 to interactive elements. No bouncing, no spinning, no confetti. Hover effects should be a subtle border color change and slight shadow."

AI loves dramatic animations. Constrain them or your UI will feel like a theme park.

5. Mobile First, Always

"Design for mobile first. On mobile, the sidebar becomes a hamburger menu. The card grid goes to single column. Touch targets should be at least 44px."

If you don't specify mobile behavior, AI ignores it entirely.

Quick Wins for Any AI-Generated UI

If you already have an AI-generated UI and want to improve it:

1. Increase padding by 50%. Almost every AI UI is too cramped.
2. Reduce font sizes by one step. AI tends to make text too large.
3. Add hover states to every button and link.
4. Add a consistent border radius. Pick one size (8px or 12px) and use it everywhere.
5. Reduce color variety. Pick two colors (background + accent) and remove the rest.
6. Add loading skeletons — use our Component Generator to create them.

The Design Review

After AI generates your UI, check:

• [ ] Is there a clear visual hierarchy? (What do you see first?)
• [ ] Is spacing consistent? (Same padding inside similar elements?)
• [ ] Do interactive elements have hover/active/focus states?
• [ ] Does it work on mobile? (Resize your browser to 375px width)
• [ ] Is text readable? (14px minimum for body text, 4.5:1 contrast ratio)
• [ ] Are there empty states? (What shows when there's no data?)

Use our Accessibility Checker and Color Contrast Checker to verify the last point.

Good design isn't subjective magic — it's specific, testable decisions. Tell AI exactly what those decisions are, and the output will look professional.