spline.design — design breakdown

Dev Tools · 3D & WebGL

Spline — collaborative 3D design tool. 3D design in browser, soft gradient renders, approachable 3D play. This page breaks down the measurable design decisions behind the site — the extracted color palette, typography, tone of voice — and generates a complete vibe-coding prompt that recreates the same design language in Lovable, Cursor or v0.

Screenshot of the spline.design homepage — Dev Tools web design example

The spline.design front page as captured for the Norrly library.

Color palette

The dominant colors extracted from the live site:

#000000#303030#606060#303090#181860

Typography & voice

Heading fontSpline Sans

Hero headline“The all-in-one platform for 3D and design”

CategoryDev Tools

Voice: immersive and futuristic. Hero headline: “The all-in-one platform for 3D and design”

What spline.design does well

Interactive 3D creates a "how did they do that" moment that makes the site memorable.

Apply it to your own project

Use 3D as seasoning, not the meal — one hero moment, fast fallbacks elsewhere.

The vibe-coding prompt

Norrly generates a complete founding prompt from the measured values above — theme, exact hex colors, type scale, button geometry, section structure, motion rules and hard constraints. Paste it into Lovable, Cursor, v0 or Bolt to start from spline.design's design language instead of AI defaults. A preview:

You are a world-class web designer + frontend engineer. Build an original single-page landing page in the exact design language of spline.design (dev tools — Spline — collaborative 3D design tool.) Do NOT clone their content or logo; recreate the FEEL. Every token below was measured from the live site — follow them precisely, they are the product.

Stack: React + Tailwind CSS (works in Lovable, v0, Bolt or Cursor as-is). Single page, production quality, fully responsive.

━━━ 1. DESIGN SPEC (measured tokens — the source of truth) ━━━

THEME & MOOD
- Dark theme: the page lives on #000000; light text; contrast and glow create hierarchy.
- Personality: 3D design in browser, soft gradient renders, approachable 3D play. In two words: 3D & WebGL.
- Reference anchor: think “spline.design” — 3D design in browser. Combine this reference with the exact values below (reference alone is vague, values alone lack character).

COLORS
- Page background: #000000
- Body text: #ffffff
- Card/surface color: #191a1d
- Accent (CTAs, links, ONE highlight per viewport — nothing else): #ffffff

Get the full prompt in the library →

The library includes a 15-second scroll recording, three screenshots, the full measured token set and the complete prompt for spline.design and 350+ more sites. 5 sites are free to explore.