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Revenuecat. Generous, airy, and confidently understated.

  • Developer tools
  • Light theme
  • 19 colors
  • 2 typefaces

RevenueCat speaks in a calm, developer-trusted visual register: cloud-white canvases, deep-navy ink, and a single periwinkle accent that carries every interactive moment. The headline voice is generous and oversized (up to 80px) but whispers through ultra-light weights and tight negative tracking, letting the typographic mass do the work that color and decoration normally would. Surfaces are flat and airy — soft cards on a near-white field with violet-tinted ambient shadows — and the whole system leans on shape (16px corners, 9999px pill buttons) rather than chrome to define hierarchy. Warm coral red and mint green appear as quiet decorative punctuation for category icons and chart highlights, never competing with the periwinkle for interactive priority.

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Screenshot of Revenuecat
Captured from revenuecat.com on October 11, 2026

Revenuecat design system

Revenuecat

Brand1

  • Violet supporting accent for decorative details and low-frequency emphasis. Do not promote it to the primary CTA color

Accent7

  • Soft tinted borders, periwinkle-derived dividers, subtle hover backgrounds

  • Pill backgrounds, tag fills, light decorative wash — the pale sibling of the brand accent

  • Secondary icon backgrounds, muted chart highlights

  • Category icon fills, chart accents, decorative highlight markers — the warm counterweight to periwinkle

  • Soft coral background, pastel category tag fill

  • Decorative chart fill, pastel category tag — used sparingly for icon and illustration variety

  • Green supporting accent for decorative details and low-frequency emphasis

Neutrals11

  • Body text default, high-contrast copy — the achromatic black of the system

  • Primary heading text, nav links, high-emphasis body — anchors the palette with near-black authority carrying a faint cool tint

  • Secondary text, input values, subdued body copy — sits between indigo and gray for medium-emphasis reading

  • Muted inline links, secondary metadata, caption-level annotations

  • Helper text, placeholder copy, low-emphasis labels in form and card contexts

  • Disabled states, very low-emphasis metadata

  • Stronger borders, input outlines, shadow-tinted strokes

  • Alternate surface fill for secondary cards or muted backgrounds

  • Hairline borders, card edges, divider lines — the default 1px separator

  • Page canvas, hero backdrop, outer sections — slightly cool off-white that softens the entire site

  • Card surfaces, nav bar, input fills, elevated panels — true white against the off-white canvas creates a subtle lift

Try a pairing

Pick any two colors from the palette to check whether text stays readable on top.

Aa

Paper on Periwinkle Signal

4.59 : 1 contrast

Background
Text
  • Body textPasses AA 4.5
  • Large textPasses AA 3
  • StrictFails AAA 7

More DESIGN.md files. Same web, different personalities.