Source Sans 3
sans-serif
Source Sans 3 is a clean, neutral sans-serif with open letterforms and consistent stroke widths that make it highly legible at a range of sizes. Designed by Paul D. Hunt for Adobe, it carries a professional, no-nonsense character without feeling cold or mechanical. Its slightly humanist touches give it enough warmth to feel approachable, while its overall structure keeps things orderly and efficient. It handles long stretches of text well and remains clear at small sizes, which is part of why it has become a go-to choice for functional design work.
Source Sans 3 works well as a UI font for web applications and dashboards where readability under varied conditions matters more than visual flair. It is a solid choice for documentation, technical writing, and government or institutional websites that need to communicate clearly without distraction. It also holds up well in editorial layouts for digital publications where body text needs to stay comfortable across devices and screen sizes.
Best suited for: Recommended for UI design, technical documentation, long-form digital reading, institutional websites, and applications where consistent legibility across sizes and devices is essential.
Design considerations: The extensive weight range from 200 to 900 supports flexible typographic hierarchy and emphasis without requiring additional typefaces. Its neutral, open letterforms perform reliably in both display and body text roles, making it adaptable across different layout contexts and screen environments.
Pairing guidance: Pair Source Sans 3 with Playfair Display or Merriweather to introduce serif contrast and visual interest in editorial layouts, reserving the sans-serif for body text and UI elements. Dancing Script can add a personal or informal accent to headings or callouts while Source Sans 3 maintains functional clarity in supporting text.