Source Sans 3

Source Sans 3 is a sans-serif family with a broad weight range, from 200 through 900, and both normal and italic styles. That gives it room to handle quiet text settings as well as stronger headings, while keeping the overall system within one family. Its variable format may also allow more flexible weight adjustments where supported.

Best suited for: Use it for interface labels, navigation, articles, reports, captions, and presentation headings. Lighter weights can keep supporting text visually gentle, while regular and medium weights suit everyday reading. Heavier styles can bring clear emphasis to titles, calls to action, and short display lines without changing the family.

Design considerations: The nine available weights make hierarchy easy to build, but avoid relying on weight alone for every distinction. Reserve the lightest options for suitably large text and careful contrast conditions, and use 700–900 selectively so dense layouts do not feel overemphasized. Italics can mark emphasis or secondary information while preserving the family’s visual continuity.

Pairing guidance: For a restrained layout, pair Source Sans 3 with a serif that has moderate contrast and comfortable reading proportions. A compact display serif can add distinction to major headings, while a neutral sans-serif in a different width may help separate utility text. Keep the companion font limited to a clear role, and let size, weight, and spacing establish hierarchy.