Siteprint

Designs proton.me

What font does Proton use? Proton Sans.

Proton's website sets its type in Proton Sans, on a light #FFFFFF canvas with #000000 text and a #372580 accent. Copy the palette and fonts, or a ready prompt to build something original in this style with Claude Code, Cursor, Lovable or v0.

Colors tap to copy

    Type and shape

      Start

      In this style

      Ship the page you pictured.

      Your agent builds new screens with these exact colors, type and corners, so nothing looks generic.

      Get startedLearn more
      FastEvery value measured.
      YoursNew layout and copy.
      prompt.md

      Proton fonts and type scale

      Proton's website sets both headings and body text in Proton Sans, with ui-monospace for code. Body text is 18px, section headings 24px and the largest display type 96px, at weight 600. If you can't use Proton Sans, ask your AI for the closest free match and keep the sizes and weights.

      Proton color codes

      Canvas#FFFFFFthe page background
      Surface#E5E7EBcards and raised areas
      Text#000000primary text
      Accent#372580buttons, links and focus
      Muted#4B5563secondary text and captions
      Border#CA8A04dividers and outlines

      How do I build a site that looks like Proton with AI?

      Open the Prompt tab above, change its first line to what you are building, and paste it into Lovable, v0, Bolt, Claude Code or Cursor. For a whole project, install the Claude skill or the Cursor rule instead, so every screen keeps the style. Build something original: keep Proton's look, not its name, logo or copy.

      Read from proton.me's public CSS on 25 October 2026. Siteprint is not affiliated with Proton; names and trademarks belong to their owners.