Fonts that go with IBM Plex Serif
Of the 4,566 home pages that load IBM Plex Serif, 29% also load IBM Plex Sans and 19% Inter. IBM Plex Serif meets 16 fonts on 50 sites or more. Weighed against how common each font is, IBM Plex Sans Condensed comes with it most: on 65 sites, where chance would give 1.1.
Fonts on the same home page, not which one sets the headings · HTTP Archive , 1 September 2026
01 / Set together
How the pairs look
Each font drawn from its own outlines, one as a heading and the other as text, then the other way round: the crawl does not say which sets the headings.
IBM Plex Serif + IBM Plex Sans
1,308 sites · 48× chance
Heading · IBM Plex Serif
IBM Plex SerifText · IBM Plex Sans
Heading · IBM Plex Sans
IBM Plex SansText · IBM Plex Serif
IBM Plex Serif + IBM Plex Sans Condensed
65 sites · 57× chance
Heading · IBM Plex Serif
IBM Plex SerifText · IBM Plex Sans Condensed
Heading · IBM Plex Sans Condensed
IBM Plex Sans CondensedText · IBM Plex Serif
IBM Plex Serif + Inter
874 sites · 1.9× chance
Heading · IBM Plex Serif
IBM Plex SerifText · Inter
Heading · Inter
InterText · IBM Plex Serif
02 / Most often
Used most with IBM Plex Serif
The share of its 4,566 home pages that load each font too, and how many times as often as chance would have it: 1× is chance.
- IBM Plex Sans29%1,308 sites · 48× chanceIBM Plex Serif’s own family
- Inter19%874 sites · 1.9× chance
- Roboto8.6%392 sites · 0.4× chance
- Poppins7.7%351 sites · 0.7× chance
- Open Sans7.5%344 sites · 0.4× chance
- IBM Plex Mono6%274 sites · 23× chanceIBM Plex Serif’s own family
- Montserrat5.1%233 sites · 0.4× chance
- Lato2.7%121 sites · 0.3× chance
- Playfair Display2.2%102 sites · 0.8× chance
03 / Beyond chance
Used with it beyond chance
Weighed against how common each font is: the sites that load both, against those that would if every site picked its fonts at random, each as often as sites use it. From 50 sites, and not one theme copied.
- IBM Plex Sans Condensed57×65 sites, where chance gives 1.1IBM Plex Serif’s own family
- IBM Plex Sans48×1,308 sites, where chance gives 27IBM Plex Serif’s own family
- IBM Plex Mono23×274 sites, where chance gives 12IBM Plex Serif’s own family
- Abril Fatface11×89 sites, where chance gives 7.9
- Inter1.9×874 sites, where chance gives 465
04 / Trios
Trios with IBM Plex Serif
The two fonts most used with it as a set of three, each two of the three together more often than chance would have them.
05 / Questions
Pairing IBM Plex Serif
Answered from HTTP Archive’s crawl of 1 September 2026 and each font’s licence
What font goes with IBM Plex Serif?
On the 4,566 home pages that load IBM Plex Serif (HTTP Archive, September 2026), the fonts loaded most often with it are IBM Plex Sans (1,308 sites, 29% of them), Inter (874) and Roboto (392). They are on the same page: the data does not say which one sets the headings.
What fonts pair well with IBM Plex Serif?
Weighed against how common each font is, sites choose IBM Plex Sans Condensed with IBM Plex Serif most: 57× as often as chance would have it, on 65 sites where chance gives 1.1. Then IBM Plex Sans (48×) and IBM Plex Mono (23×).
What three fonts go with IBM Plex Serif?
216 sites load IBM Plex Serif with IBM Plex Mono and IBM Plex Sans, each two of the three together more often than chance would have them.
Can I use IBM Plex Serif and IBM Plex Sans Condensed together for free?
Yes: both are free, commercial work included. IBM Plex Serif and IBM Plex Sans Condensed are both under the SIL Open Font License. Each font’s page says what its licence allows.