AI Prompts for Website Design

Business & Marketing Updated September 1, 2026 by GenPrompto
Prompt
I’m building a website for [business or purpose, described specifically] with a [brand personality, e.g. "professional but approachable"] feel. Give me: a primary and accent color palette in hex codes, a heading and body font pairing with reasoning, and a spacing scale for consistent layout throughout the site.

What this does

Builds a concrete design system with AI -- real hex codes, font pairing, spacing scale -- ready to implement, not vague advice.

A usable design system needs actual hex codes, a specific font pairing, and a defined spacing scale — not vague color adjectives — since “a nice color scheme” produces nothing you can directly hand to a developer or implement in code.

What this produces

A concrete design system: a primary and accent color palette in hex codes, a heading/body font pairing with reasoning, and a consistent spacing scale — ready to implement directly, not general design advice.

Variations

Two ready-to-copy versions for different brand personalities.

Full Design System Version
I’m building a website for [business/purpose, described specifically] with a [brand personality, e.g. “professional but approachable”] feel. Give me: a primary and accent color palette in hex codes, a heading and body font pairing with reasoning, and a spacing scale (in rem or px) for consistent layout spacing.
Color Palette Only Version
Give me a color palette in hex codes for a [brand personality, e.g. “minimal and modern” or “warm and playful”] website for [business type, described specifically]. Include a primary color, an accent color, and neutral tones for text and backgrounds, with brief reasoning for each choice.

Who this is for

Anyone who needs a concrete design system — specific colors, fonts, and spacing values — rather than general layout advice, before starting to build or design a site.

Example Output

Asking for actual hex codes, named font pairings, and a defined spacing scale produces a design system you can hand directly to a developer or plug into code — asking for “a nice color scheme” with no structure returns vague adjectives with nothing concrete to build from.

Tips for better results

  • Ask for actual hex codes, not color names — “a calming blue” isn’t something you can implement directly.
  • Request a font pairing (heading font + body font) with reasoning for why they work together.
  • Ask for a defined spacing scale (a set of consistent pixel or rem values) rather than ad-hoc spacing decisions per page.
  • Mention your brand personality (playful, professional, minimal) so the system reflects your actual identity, not a generic default.

What didn’t work as well

Asking for “a nice color scheme” with no brand context or format requested. The result is vague adjectives — “calming blues” — with nothing concrete to implement. Asking for actual hex codes and a defined system is what makes it directly usable.

If this is useful, you may also want AI Prompt for Expert Web Design or Good AI Prompts for Work.

FAQ

Can I get this as actual CSS variables?

Yes — ask explicitly for the output formatted as CSS custom properties (e.g. “–color-primary: #…”) once you have the palette, so it’s directly pasteable into a stylesheet.

How is this different from a general web design prompt?

This produces the concrete building blocks — colors, fonts, spacing values — rather than layout structure and UX reasoning; use both together for a complete direction.

What if I already have a logo or brand colors?

Paste your existing colors or describe your logo, and ask for an accent palette and font pairing that complements what you already have rather than replacing it.

Related