IBM Plex Sans
sans-serif · Designed by Mike Abbink, Bold Monday
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IBM Plex Sans is a clean, rational typeface with a technical edge. Designed by IBM in collaboration with Bold Monday, it carries a distinctly corporate yet approachable personality. The letterforms are precise and structured, with subtle humanist touches that keep it from feeling cold or mechanical. It has consistent stroke weights, open apertures, and a neutral tone that makes it highly readable across sizes. It does not call attention to itself, which is exactly the point — it communicates clearly and gets out of the way.
IBM Plex Sans works well in enterprise software interfaces and developer tools, where legibility and professionalism are non-negotiable and the typeface needs to hold up across dense UI components like dashboards, tables, and navigation menus. It is a strong fit for technology company branding, particularly startups or mid-size firms that want to signal competence and precision without leaning on stiff traditional serif conventions. It also performs well in editorial layouts for digital publications covering business, finance, or tech, where a structured reading experience matters more than stylistic flair.
Best suited for: Enterprise dashboards, developer documentation, fintech platforms, and corporate digital products where clarity and professional restraint take priority over visual personality.
Design considerations: The extensive weight range from 100 to 700 supports flexible hierarchy and emphasis across complex layouts without requiring font substitution. Its neutral, structured character works best in contexts where the typeface serves content rather than establishes brand voice, making it particularly effective in information-dense environments.
Pairing guidance: Pair IBM Plex Sans with Playfair Display to introduce editorial elegance and contrast in headlines or feature sections, with Source Serif 4 to add warmth and sophistication to body text in longer-form content, or with Space Mono to reinforce technical credibility in code samples, data visualization labels, or developer-focused materials.
Pairs well with
IBM Plex Sans at a glance
Mike Abbink, Bold Monday
SIL Open Font License 1.1
March 2018
September 2025
14 (7 weights + italics)
Yes: width 75–100, weight 100–700
Sans Serif
6
Google Fonts
All 14 IBM Plex Sans styles
| Weight | Name | Upright | Italic |
|---|---|---|---|
| 100 | Thin | Aa Bb Gg 123 | Aa Bb Gg 123 |
| 200 | ExtraLight | Aa Bb Gg 123 | Aa Bb Gg 123 |
| 300 | Light | Aa Bb Gg 123 | Aa Bb Gg 123 |
| 400 | Regular | Aa Bb Gg 123 | Aa Bb Gg 123 |
| 500 | Medium | Aa Bb Gg 123 | Aa Bb Gg 123 |
| 600 | SemiBold | Aa Bb Gg 123 | Aa Bb Gg 123 |
| 700 | Bold | Aa Bb Gg 123 | Aa Bb Gg 123 |
IBM Plex Sans character map
Which languages does IBM Plex Sans support?
IBM Plex Sans includes 6 character sets:
- Cyrillic: Russian, Ukrainian, Bulgarian, Serbian and other Cyrillic-script languages
- Cyrillic Extended: additional Cyrillic letters used in languages such as Kazakh, Tatar and Bashkir
- Greek: modern Greek
- Latin: English, Spanish, French, German, Italian, Portuguese and other Western European languages
- Latin Extended: Central and Eastern European languages such as Polish, Czech, Turkish, Romanian and Hungarian
- Vietnamese: Vietnamese, including its stacked tone marks
Can I use IBM Plex Sans commercially?
Yes, it's free for personal and commercial use. IBM Plex Sans is released under the SIL Open Font License 1.1. You can use it in logos, websites, apps, videos, printed products and merchandise without paying or asking permission. The one thing you can't do is sell the font file on its own.