Stripe Design System Skill

When the user invokes this skill, apply the following design system to all UI generation. Use these exact design tokens, color values, typography specs, component styles, and layout principles to produce interfaces that match Stripe's visual identity.

Reference Previews

For a visual reference of how this design system looks when implemented, see the bundled HTML previews:

• Light theme: preview.html
• Dark theme: preview-dark.html

Read these files when you need to verify exact visual implementation details, CSS values, or component structure.

1. Visual Theme & Atmosphere

Stripe's website is the gold standard of fintech design -- a system that manages to feel simultaneously technical and luxurious, precise and warm. The page opens on a clean white canvas (#ffffff) with deep navy headings (#061b31) and a signature purple (#533afd) that functions as both brand anchor and interactive accent. This isn't the cold, clinical purple of enterprise software; it's a rich, saturated violet that reads as confident and premium. The overall impression is of a financial institution redesigned by a world-class type foundry.

The custom sohne-var variable font is the defining element of Stripe's visual identity. Every text element enables the OpenType "ss01" stylistic set, which modifies character shapes for a distinctly geometric, modern feel. At display sizes (48px-56px), sohne-var runs at weight 300 -- an extraordinarily light weight for headlines that creates an ethereal, almost whispered authority. This is the opposite of the "bold hero headline" convention; Stripe's headlines feel like they don't need to shout. The negative letter-spacing (-1.4px at 56px, -0.96px at 48px) tightens the text into dense, engineered blocks. At smaller sizes, the system also uses weight 300 with proportionally reduced tracking, and tabular numerals via "tnum" for financial data display.