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TypeSmith

Discover beautiful fonts and perfect pairings for your next project. Browse 8,500+ fonts with accessibility ratings.

© 2026 TypeSmith · Robert David Orr

  1. Fonts
  2. /
  3. Sans Serif
  4. /
  5. IBM Plex

IBM Plex

IBM Plex delivers clean, contemporary letterforms optimized for digital interfaces and modern design systems.

Scroll to explore
Sans Serifby IBM86% Accessible
Characters712
Glyphs854
Typography Tools

Best Ways to Use IBM Plex

01

Best Font Pairings for IBM Plex

TypeSmith curates 4 expert font pairings for IBM Plex, including combinations with Kaisei Opti, Konkhmer Sleokchher and Cherry Bomb One.

Each pairing includes accessibility ratings, expert reasoning, and usage recommendations for web and print design.

Explore 4 Pairings for IBM Plex
02

Test IBM Plex Font Pairings Live

TypeSmith's interactive testing tool lets you preview IBM Plex with any font combination in real-time, optimized for sans serif characteristics.

Adjust font sizes, weights, and see live typography specimens including editorial layouts, code editors, and UI components.

Test IBM Plex Pairings Live

In Context

IBM Plex Specimen Gallery

EditorialUI ComponentsPosterWordmark

IBM Plex Editorial Specimen

IBM Plex in Editorial Context

IBM Plex is a sans serif typeface by IBM suited for editorial layouts and long-form reading.

IBM

Typeface Designer • Sans Serif

IBM Plex demonstrates editorial readability through balanced proportions and consistent stroke weight. As a sans serif typeface, it delivers clear letterforms that sustain reader engagement across extended passages of text.

The weight range of IBM Plex supports typographic hierarchy within editorial layouts. Headline weights establish visual anchors while lighter weights maintain comfortable reading rhythm in body text columns.

Designed by IBM, IBM Plex balances personality with function — providing enough character to establish visual identity without compromising the legibility that editorial contexts demand.

IBM Plex
ProductsSolutionsResourcesPricing

IBM Plex Typography

A sans serif typeface for UI components.

Active2 weights available
DefaultInfoSuccessWarningError
IBM Plex Specimen

IBM Plex

IBM Plex is a sans serif typeface by IBM built for display contexts.

2 WeightsSans Serif Typeface
Available on TypeSmith

Wordmark Explorations

IBM Plex
IBM Plex
IBM PLEX
IBM PLEXTYPE
I

Tagline Pairings

IBM Plex— sans serif typeface
IBM PlexBy IBM
IBM PlexTYPE

Editorial

Magazine-style headline and body text layout

Character Set

IBM Plex Glyphs & Characters

Size48
Showing 62 of 187 charactersDouble-click to copy • Click for details
ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz 0123456789

Type Scale

Display Sizes for IBM Plex

Heading Level 1<h1>
64px
Bold
72px
IBM Plex primary headline
Heading Level 2<h2>
48px
SemiBold
56px
IBM Plex section heading
Heading Level 3<h3>
32px
Medium
40px
IBM Plex subsection title
Heading Level 4<h4>
24px
Regular
32px
IBM Plex content heading
Heading Level 5<h5>
18px
Regular
26px
IBM Plex minor heading
Heading Level 6<h6>
14px
Medium
20px
IBM Plex smallest heading
Font SizeWeightLine Height
Body Copy

Body Text with IBM Plex

TypeSmith provides optimized body text specifications for IBM Plex, including recommended sizes, line heights, and letter spacing for long-form content. These settings ensure maximum readability across devices and screen sizes.

IBM Plex demonstrates exceptional body text performance with balanced proportions and consistent stroke widths that enhance readability across paragraph lengths.

When setting IBM Plex for body copy, TypeSmith recommends these optimized specifications. The carefully tuned metrics ensure comfortable reading at extended lengths while maintaining the typeface's distinctive character.

IBM Plex small text sizes retain legibility through well-defined letterforms. Caption and footnote applications benefit from the font's clear x-height and open counters.

ElementWeightSizeLine HeightTrackingPreview
Body TextRegular16px24px0.5pxIBM Plex delivers excellent readability for body copy
ItalicizedRegular Italic16px24px0.5pxIBM Plex italic provides elegant emphasis
BoldBold16px24px0.5pxIBM Plex bold creates strong visual hierarchy
Small CapsRegular16px24px0.5pxIBM Plex typography specimen
Secondary TextMedium14px20px0.5pxIBM Plex typography specimen
.your-class { font-family: 'IBM Plex'; }

Quick Start

How to Embed IBM Plex in Your Project

HTML Link Tag

Add to your <head> section

<link href="https://fonts.bunny.net/css?family=IBM+Plex:400,700&display=swap" rel="stylesheet">

CSS @import

Add at top of your stylesheet

@import url('https://fonts.bunny.net/css?family=IBM+Plex:400,700&display=swap');

CSS @font-face

Self-host the font files

@font-face {
  font-family: 'IBM Plex';
  src: url('https://fonts.googleapis.com/css2?family=IBM+Plex:wght@400;700&display=swap');
  font-display: swap;
}

Implementation

IBM Plex CSS Implementation

Standard CSS

css

Apply directly to any CSS class or selector.

 1.my-text {
 2  font-family: 'IBM Plex', sans-serif;
 3  font-weight: 400;
 4}

SCSS Variable

scss

Define once, use throughout your stylesheet.

 1$font-primary: 'IBM Plex', sans-serif;
 2
 3.my-text {
 4  font-family: $font-primary;
 5}

Tailwind CSS

config

Configure once, apply with utility classes.

 1// tailwind.config.js
 2module.exports = {
 3  theme: {
 4    extend: {
 5      fontFamily: {
 6        'ibm-plex': ['IBM Plex', 'sans-serif'],
 7      },
 8    },
 9  },
10}
11
12// Usage in HTML
13<p class="font-ibm-plex">Your text here</p>

About

IBM Plex Background & Features

IBM
Sans Serif
Open Source

IBM Plex is a free font from IBM.

IBM Plex was created by IBM. The typeface shows dedication to typographic detail, visible in its letterform construction and optical balance.

As a Sans Serif typeface in the Vox-ATypI Lineal classification, IBM Plex features no serif extensions on stroke terminals and stroke contrast ranging from monolinear to subtly modulated. These optical characteristics make it well-suited for screen-first digital products and web applications.

IBM Plex is available in a single weight, offering focused typographic consistency for both digital and print applications, with 4 curated font pairings available. Extended language support spanning Cyrillic, Greek, and Latin Extended ensures reliable rendering across global audiences.

IBM Plex

Typography Judgment

Expert Analysis of IBM Plex

TypeSmith evaluates every font across classification, accessibility, and design heritage. This analysis helps designers understand IBM Plex's strengths and ideal use cases before committing to a typography decision.

1

Classification

Sans Serif analysis. Typographic analysis places IBM Plex within the Lineal (Grotesque, Neo-grotesque, Geometric, Humanist) tradition, characterized by No serif extensions on stroke terminals and Stroke contrast ranging from monolinear to subtly modulated. The first commercially successful sans-serifs appeared in the 1810s-1830s as display types. Key technical strength: widest variable-font support with weight and width axes.

2

Accessibility

Readability assessment (grade: 86). IBM Plex performs strongly for sustained reading across digital and print contexts. Humanist sans-serifs offer the best body-text readability in the category.

3

Design Heritage

Designed by IBM. The designer's attention to glyph proportions and optical balance produces a Sans Serif with a single focused weight suited to both digital and print workflows.

Overview

About IBM Plex

IBM Plex is classified as a Lineal typeface, rooted in the tradition where the first commercially successful sans-serifs appeared in the 1810s-1830s as display types. Its distinctive no serif extensions on stroke terminals and stroke contrast ranging from monolinear to subtly modulated make it well-suited for wayfinding, signage, and information design. TypeSmith features IBM Plex in a single weight variant and 4 curated font pairings.

Font Pairings Available
4 curated pairings for IBM Plex
View Pairings

Categories

Browse by Classification

DisplayHandwritingMonospaceSans SerifSerif

Explore More

Typefaces Like IBM Plex

View all fonts

TypeSmith identifies 5 fonts with similar visual characteristics to IBM Plex based on classification, x-height ratio, and stroke weight. These alternatives maintain the same typographic personality while offering different weight options and language support.

Aa
Galdeano
Sans Serif
Aa
Aclonica
Sans Serif
Aa
Encode Sans
Sans Serif
Aa
Encode Sans Expanded
Sans Serif
Aa
Advent Pro
Sans Serif

Inclusive Design

Accessibility & Usability

86
Accessibility Score
Excellent Accessibility

IBM Plex: Accessibility Considerations

IBM Plex scores in the excellent accessibility tier, making it well-suited for body text, UI labels, and long-form reading across devices. Grotesques with ambiguous letterforms (I/l/1) reduce accessibility. Choose designs with distinct character differentiation and open apertures for inclusive typography.

Reading IBM Plex: Legibility Factors

IBM Plex draws legibility from its no serif extensions on stroke terminals and stroke contrast ranging from monolinear to subtly modulated. These characteristics help readers distinguish similar glyphs such as I, l, and 1 at a range of sizes.

How Readable is IBM Plex?

Humanist sans-serifs offer the best body-text readability in the category. Geometric and neo-grotesque designs excel in short-form UI text but require careful sizing for sustained reading. Use at 16 px minimum for body text, and maintain 1.5 line-height to support comfortable reading rhythm.

Visual Comfort with IBM Plex

IBM Plex provides a focused weight range that maintains consistent typographic color across paragraphs. Balanced stroke modulation keeps visual noise low during sustained reading sessions.

IBM Plex Accessibility Recommendations

Maintain a minimum contrast ratio of 4.5:1 for body text and 3:1 for large text when setting IBM Plex. Use font sizes of at least 16 px for paragraph copy and line spacing of 1.5 or greater. Test IBM Plex at 200% browser zoom to confirm line breaks and layout integrity remain intact.

Design Tips for IBM Plex

Pair with Garalde or Transitional serifs for classic contrast. A humanist sans body with a geometric sans display creates intra-category tension without conflict. Curated pairings are available to guide complementary typeface selection for IBM Plex. Establish hierarchy through size, spacing, and color rather than multiplying font families. Serve IBM Plex in WOFF2 format with its extended character set to ensure consistent rendering across global audiences.

Get the Font

Download IBM Plex

Available Weights

400
Regular
Local
400
Regular Italic
Local
700
Bold
Local
700
Bold Italic
Local

Weight Reference

Aa
100
Aa
200
Aa
300
Aa
400
Aa
500
Aa
600
Aa
700
Aa
800
Aa
900

Internationalization

IBM Plex Multilingual Support

Extended Latin Coverage
Supports 100+ languages with Latin script

Western European

  • English
  • French
  • German
  • Spanish
  • Italian
  • Portuguese
  • Dutch

Nordic

  • Swedish
  • Norwegian
  • Danish
  • Finnish
  • Icelandic

Central European

  • Polish
  • Czech
  • Hungarian
  • Romanian
  • Slovak

Baltic

  • Lithuanian
  • Latvian
  • Estonian

This font encodes 750 glyphs covering Latin and Cyrillic. Latin coverage extends past the basic ASCII set into Latin Extended, so Central and Eastern European languages set correctly. Text outside these ranges falls back to another face in the stack.

Legal

IBM Plex Licensing

SIL Open Font License (OFL) 1.1
Free for personal and commercial use
View License

What you can do

  • Personal projects
  • Commercial projects
  • Web embedding
  • App embedding
  • Modification
  • Redistribution

Restrictions

  • Selling as standalone

Modified versions must use a different name and be distributed under the same OFL license.

IBM Plex is available under the SIL Open Font License (OFL), Version 1.1. This license is a free, libre, and open source license specifically designed for fonts and related software. The OFL allows the fonts to be used, studied, modified, and redistributed freely as long as they are not sold by themselves. This makes IBM Plex ideal for web projects, applications, documents, and print materials of any kind.