What font does IBM use?

IBM’s website uses three typefaces: IBM Plex Sans (headings and body text), served from 1.www.s81c.com; IBM Plex Mono, served from 1.www.s81c.com; IBM Plex Serif, served from 1.www.s81c.com.

What are IBM’s brand colours?

The main colours on ibm.com are Royal Blue (#0F62FE), Deep Cornflower Blue (#4589FF), Blue (#0043CE), Light Cornflower Blue (#78A9FF), Crimson (#DA1E28) and Gold (#F1C21B).

What colour is IBM’s text and background?

Body text is #161616 on a #FFFFFF background.

Is this IBM’s official style guide?

No. SiteStyleGuide made it from ibm.com’s public web pages on 25 October 2026, and isn’t affiliated with IBM. Members can refresh a guide after 90 days to pick up changes.

Unofficial A style guide made by SiteStyleGuide from ibm.com’s public web pages. Not affiliated with or endorsed by IBM. The real site is ibm.com ↗

Unofficial style guide

IBMstyle guide

IBM’s website (ibm.com) uses IBM Plex Sans for its headings and body text. Its palette is led by Royal Blue (#0F62FE), Deep Cornflower Blue (#4589FF) and Blue (#0043CE), with #161616 text on #FFFFFF. Captured from the live site on 25 October 2026.

Website: ibm.com
Typefaces: IBM Plex Sans, IBM Plex Mono, IBM Plex Serif
Palette: 4 neutrals, 12 colours, 3 gradients
Captured: 25 Oct 2026 · added by @sitestyleguide

Save Add to collection Share Report

Screenshot of the ibm.com homepage on a desktop screen — Screenshot of ibm.com on a 1440 px desktop screen, 25 Oct 2026.

Screenshot of the ibm.com homepage on a phone — On a phone, 390 px.

Identity & metadata

What browsers, search engines and social cards show before anyone reaches the page, from the homepage’s <head>.

Title &
description

Page title: IBM; ● 3 / 60 characters
Meta description: For more than a century, IBM has been a global technology innovator, leading advances in AI, automation and hybrid cloud solutions that help businesses grow.; ● 157 / 160 characters
Site name: IBM
og:title: IBM
og:description: For more than a century, IBM has been a global technology innovator, leading advances in AI, automation and hybrid cloud solutions that help businesses grow.
Language: en

In search results

IBMhttps://www.ibm.com/au-en

IBM

For more than a century, IBM has been a global technology innovator, leading advances in AI, automation and hybrid cloud solutions that help businesses grow.

When shared

ibm.com

IBM

For more than a century, IBM has been a global technology innovator, leading advances in AI, automation and h…

Logo & favicons

No logo could be found on the homepage.

Logo

Favicons

7 found

512 px · PNG icon
192 px · PNG icon
120 px · PNG apple-touch-icon
76 px · PNG apple-touch-icon
57 px · PNG apple-touch-icon
32 px · PNG icon
16 px · PNG icon

IBM

Light browser tab

IBM

Dark browser tab

Colour

Read from the site’s stylesheets and weighted by where each colour is used. Names are the nearest standard colour name. Click a swatch to copy its hex code.

Contrast is against the site’s text colour (#161616) and white, using WCAG 2 ratios: 4.5 for body text, 3 for large text.

Colour

Balance

How much each colour is used

White 25.8%
Near Black 14.2%
Off White 11.9%
Light Grey 11%
Royal Blue 8.7%
Deep Cornflower Blue 4.8%
Blue 3.7%
Light Cornflower Blue 3.5%
Crimson 3.2%
Gold 2.9%
Deep Steel Blue 2.4%
Indian Red 1.8%
Light Steel Blue 1.6%
Fire Brick 1.6%
Midnight Blue 1.4%
Medium Sea Green 1.4%

By how often each colour appears in the site’s CSS, weighted by where (body, headings, buttons), not by area on the screen.

Neutrals

Text, backgrounds and structure

White

HEX

RGB

HSL

OKLCH

CMYK
0 0 0 0

On text
18.10:1 AAA

On white
—

Background, text, border · --cds-layer, --cds-field
Near Black

HEX

RGB

HSL

OKLCH

CMYK
0 0 0 91

On text
—

On white
18.10:1 AAA

Text, graphic, background · --cds-ai-popover-background, --cds-chat-prompt-background
Off White

HEX

RGB

HSL

OKLCH

CMYK
0 0 0 12

On text
13.71:1 AAA

On white
1.32:1 Fail

Background, border · --cds-layer-selected, --cds-layer-accent
Light Grey

HEX

RGB

HSL

OKLCH

CMYK
0 0 0 22

On text
10.59:1 AAA

On white
1.71:1 Fail

Background, border · --cds-layer-active, --cds-border-subtle-selected

Colours

Brand colours and accents, most used first

Royal Blue

HEX

RGB

HSL

OKLCH

CMYK
94 61 0 0

On text
3.62:1 AA large

On white
5.00:1 AA

Border, text, background · --cds-background-brand, --cds-button-primary
Deep Cornflower Blue

HEX

RGB

HSL

OKLCH

CMYK
73 46 0 0

On text
5.41:1 AA

On white
3.35:1 AA large

Used · --cds-ai-border-end, --cds-ai-popover-caret-bottom
Blue

HEX

RGB

HSL

OKLCH

CMYK
100 67 0 19

On text
2.32:1 Fail

On white
7.79:1 AAA

Text · --cds-link-inverse-hover, --cds-support-info-inverse
Light Cornflower Blue

HEX

RGB

HSL

OKLCH

CMYK
53 34 0 0

On text
7.68:1 AAA

On white
2.35:1 Fail

Background, text, graphic · --cds-ai-border-strong, --cds-chat-button
Crimson

HEX

RGB

HSL

OKLCH

CMYK
0 86 82 15

On text
3.62:1 AA large

On white
5.00:1 AA

Text, graphic, background · --cds-button-danger-primary, --cds-support-error-inverse
Gold

HEX

RGB

HSL

OKLCH

CMYK
0 20 89 5

On text
10.75:1 AAA

On white
1.68:1 Fail

Graphic · --cds-support-caution-minor, --cds-support-warning
Deep Steel Blue

HEX

RGB

HSL

OKLCH

CMYK
35 22 0 0

On text
10.62:1 AAA

On white
1.70:1 Fail

Graphic · --cds-chat-button-text-hover, --cds-link-primary-hover
Indian Red

HEX

RGB

HSL

OKLCH

CMYK
0 69 66 2

On text
5.40:1 AA

On white
3.35:1 AA large

Used · --cds-tag-border-red, --cds-support-error
Light Steel Blue

HEX

RGB

HSL

OKLCH

CMYK
18 11 0 0

On text
13.79:1 AAA

On white
1.31:1 Fail

Background · --cds-tag-color-blue, --cds-ai-skeleton-background
Fire Brick

HEX

RGB

HSL

OKLCH

CMYK
0 86 82 28

On text
2.76:1 Fail

On white
6.56:1 AA

Background, border · --cds-button-danger-hover, --cds-tag-hover-red
Midnight Blue

HEX

RGB

HSL

OKLCH

CMYK
100 71 0 39

On text
1.60:1 Fail

On white
11.32:1 AAA

Background, text · --cds-button-primary-active, --cds-button-tertiary-active
Medium Sea Green

HEX

RGB

HSL

OKLCH

CMYK
78 0 55 37

On text
5.40:1 AA

On white
3.35:1 AA large

Text · --cds-support-success-inverse, --cds-tag-border-green

Gradients

linear-gradient(0deg,rgba(69,137,255,.16) 0,15%,hsla(0,0%,100%,0) 50%,transparent 100%)
linear-gradient(to top,#f4f4f4 0,rgba(69,137,255,.1) 0,15%,hsla(0,0%,100%,0) 50%) padding-box,linear-gradient(to top,#f4f4f4,#f4f4f4) padding-box,linear-gradient(to bottom,rgba(166,200,255,.64),#78a9ff) border-box,linear-gradient(to top,#f4f4f4,#f4f4f4)
linear-gradient(to top,rgba(69,137,255,.32) 0,15%,hsla(0,0%,100%,0) 50%) padding-box,linear-gradient(to top,#edf5ff,#edf5ff) padding-box,linear-gradient(to bottom,rgba(166,200,255,.64),#78a9ff) border-box,linear-gradient(to top,#edf5ff,#edf5ff)

Typography

Faces from Google Fonts are shown in the real thing. Others are licensed to the site, so they show in your device’s copy if you have one, or a stand-in if not.

IBM Plex Sans

Aa 100 Aa 700

IBM Plex Sans

Served from 1.www.s81c.com · weights 100, 200, 300, 400, 450, 500, 600, 700 · body · shown in a stand-in if you don’t have it

Aa 100 Aa 700

IBM Plex Mono

Served from 1.www.s81c.com · weights 100, 200, 300, 400, 450, 500, 600, 700 · shown in a stand-in if you don’t have it

Aa 100 Aa 700

IBM Plex Serif

Served from 1.www.s81c.com · weights 100, 200, 300, 400, 450, 500, 600, 700 · shown in a stand-in if you don’t have it

ABCDEFGHIJKLMNOPQRSTUVWXYZ
abcdefghijklmnopqrstuvwxyz
0123456789 ! ? & @ % $ – ’ “ ”

Type scale

From the site’s CSS

Heading 1 2.625rem · 42 px / 1.199 weight 300

IBM

Heading 2 2rem · 32 px / 1.25 weight 400

IBM

Heading 3 1.75rem · 28 px / 1.28572 weight 400

IBM

Heading 4 1.25rem · 20 px / 1.4 weight 400

IBM

Heading 5 1rem · 16 px / 1.375 weight 600

IBM

Heading 6 .875rem · 14 px / 1.28572 weight 600

IBM

Body 100% / 1 weight 400 · IBM Plex Sans

For more than a century, IBM has been a global technology innovator, leading advances in AI, automation and hybrid cloud solutions that hel…

Paragraph 1rem · 16 px / 1.5 weight 400

For more than a century, IBM has been a global technology innovator, leading advances in AI, automation and hybrid cloud solutions that hel…

Small 100%

For more than a century, IBM has been a global technology innovator, leading advances in AI, automation and hybrid cloud solutions that hel…

Link 100%

Sizes in use

Most common across the site

42pxline 1.199 · 3 rules
32pxline 1.25 · 2 rules
28pxline 1.28572 · 3 rules
20pxline 1.4 · 15 rules
16pxline 1.5 · 38 rules
14pxline 1.28572 · 80 rules
12pxline 1.33333 · 11 rules

Elements

The main button and link as the site’s CSS draws them, and the corner radii and shadows it uses most.

Elements

Button

Get started

.cds--masthead__side-nav--submemu-back button · #FFFFFF

Link

Read our latest news today.

a · #0062FE

Corner radius

50% · 6×
.25rem · 2×
.5rem · 2×
.125rem · 2×
.75rem · 2×
2px · 1×

Shadows

0 2px 6px rgba(0,0,0,.3)
inherit
-.0625rem 0 0 0 #8d8d8d
-.0625rem 0 0 0 #e0e0e0

Layout

Breakpoints from the site’s media queries and the widths its content is held to, with how often each appears.

Grid

Breakpoints

480

640

672

800

1056

1200

1312

1584

On a scale of 0 to 1584 px.

Content widths (max-width)

320 px

300 px

Notes

Plain checks on what was found. Worth fixing if you look after this site.

Notes

● FineThe title is 3 characters, short enough to show in full in search results.

Questions

Quick answers, from the same capture as the rest of this guide.

Questions

What font does IBM use?: IBM’s website uses three typefaces: IBM Plex Sans (headings and body text), served from 1.www.s81c.com; IBM Plex Mono, served from 1.www.s81c.com; IBM Plex Serif, served from 1.www.s81c.com.
What are IBM’s brand colours?: The main colours on ibm.com are Royal Blue (#0F62FE), Deep Cornflower Blue (#4589FF), Blue (#0043CE), Light Cornflower Blue (#78A9FF), Crimson (#DA1E28) and Gold (#F1C21B).
What colour is IBM’s text and background?: Body text is #161616 on a #FFFFFF background.
Is this IBM’s official style guide?: No. SiteStyleGuide made it from ibm.com’s public web pages on 25 October 2026, and isn’t affiliated with IBM. Members can refresh a guide after 90 days to pick up changes.

Design tokens

Everything above as CSS variables, ready to paste into a project. Members can download the tokens as files for Figma (Tokens Studio), Style Dictionary and Tailwind.

Tokens

ibm-com-tokens.css

Download

Free with an account: sign up or sign in, and you’ll come straight back here.

/* ibm.com design tokens, from SiteStyleGuide (https://sitestyleguide.com/ibm.com) */
:root {
  /* Colours */
  --text: #161616;
  --background: #FFFFFF;
  --colour-white: #FFFFFF;
  --colour-near-black: #161616;
  --colour-off-white: #E0E0E0;
  --colour-light-grey: #C6C6C6;
  --colour-royal-blue: #0F62FE;
  --colour-deep-cornflower-blue: #4589FF;
  --colour-blue: #0043CE;
  --colour-light-cornflower-blue: #78A9FF;
  --colour-crimson: #DA1E28;
  --colour-gold: #F1C21B;
  --colour-deep-steel-blue: #A6C8FF;
  --colour-indian-red: #FA4D56;
  --colour-light-steel-blue: #D0E2FF;
  --colour-fire-brick: #B81921;
  --colour-midnight-blue: #002D9C;
  --colour-medium-sea-green: #24A148;
  --gradient-1: linear-gradient(0deg,rgba(69,137,255,.16) 0,15%,hsla(0,0%,100%,0) 50%,transparent 100%);
  --gradient-2: linear-gradient(to top,#f4f4f4 0,rgba(69,137,255,.1) 0,15%,hsla(0,0%,100%,0) 50%) padding-box,linear-gradient(to top,#f4f4f4,#f4f4f4) padding-box,linear-gradient(to bottom,rgba(166,200,255,.64),#78a9ff) border-box,linear-gradient(to top,#f4f4f4,#f4f4f4);
  --gradient-3: linear-gradient(to top,rgba(69,137,255,.32) 0,15%,hsla(0,0%,100%,0) 50%) padding-box,linear-gradient(to top,#edf5ff,#edf5ff) padding-box,linear-gradient(to bottom,rgba(166,200,255,.64),#78a9ff) border-box,linear-gradient(to top,#edf5ff,#edf5ff);

  /* Typefaces */
  --font-body: 'IBM Plex Sans', system-ui, -apple-system, blinkmacsystemfont, sans-serif;
  --font-other: 'IBM Plex Mono', system-ui, -apple-system, blinkmacsystemfont, monospace;

  /* Type scale */
  --text-h1: 2.625rem;
  --leading-h1: 1.199;
  --text-h2: 2rem;
  --leading-h2: 1.25;
  --text-h3: 1.75rem;
  --leading-h3: 1.28572;
  --text-h4: 1.25rem;
  --leading-h4: 1.4;
  --text-h5: 1rem;
  --leading-h5: 1.375;
  --text-h6: .875rem;
  --leading-h6: 1.28572;
  --text-body: 100%;
  --leading-body: 1;
  --text-p: 1rem;
  --leading-p: 1.5;
  --text-small: 100%;
  --text-a: 100%;

  /* Shape */
  --radius-1: 50%;
  --radius-2: .25rem;
  --radius-3: .5rem;
  --radius-4: .125rem;
  --radius-5: .75rem;
  --radius-6: 2px;

  /* Layout (breakpoints can’t be used in media queries as variables; they’re here for reference) */
  --breakpoint-1: 480px;
  --breakpoint-2: 640px;
  --breakpoint-3: 672px;
  --breakpoint-4: 800px;
  --breakpoint-5: 1056px;
  --breakpoint-6: 1200px;
  --breakpoint-7: 1312px;
  --breakpoint-8: 1584px;
  --max-width-1: 320px;
  --max-width-2: 300px;
}

{
    "site": "ibm.com",
    "source": "https://sitestyleguide.com/ibm.com",
    "text": "#161616",
    "background": "#FFFFFF",
    "colours": [
        {
            "name": "White",
            "hex": "#FFFFFF",
            "rgb": [
                255,
                255,
                255
            ]
        },
        {
            "name": "Near Black",
            "hex": "#161616",
            "rgb": [
                22,
                22,
                22
            ]
        },
        {
            "name": "Off White",
            "hex": "#E0E0E0",
            "rgb": [
                224,
                224,
                224
            ]
        },
        {
            "name": "Light Grey",
            "hex": "#C6C6C6",
            "rgb": [
                198,
                198,
                198
            ]
        },
        {
            "name": "Royal Blue",
            "hex": "#0F62FE",
            "rgb": [
                15,
                98,
                254
            ]
        },
        {
            "name": "Deep Cornflower Blue",
            "hex": "#4589FF",
            "rgb": [
                69,
                137,
                255
            ]
        },
        {
            "name": "Blue",
            "hex": "#0043CE",
            "rgb": [
                0,
                67,
                206
            ]
        },
        {
            "name": "Light Cornflower Blue",
            "hex": "#78A9FF",
            "rgb": [
                120,
                169,
                255
            ]
        },
        {
            "name": "Crimson",
            "hex": "#DA1E28",
            "rgb": [
                218,
                30,
                40
            ]
        },
        {
            "name": "Gold",
            "hex": "#F1C21B",
            "rgb": [
                241,
                194,
                27
            ]
        },
        {
            "name": "Deep Steel Blue",
            "hex": "#A6C8FF",
            "rgb": [
                166,
                200,
                255
            ]
        },
        {
            "name": "Indian Red",
            "hex": "#FA4D56",
            "rgb": [
                250,
                77,
                86
            ]
        },
        {
            "name": "Light Steel Blue",
            "hex": "#D0E2FF",
            "rgb": [
                208,
                226,
                255
            ]
        },
        {
            "name": "Fire Brick",
            "hex": "#B81921",
            "rgb": [
                184,
                25,
                33
            ]
        },
        {
            "name": "Midnight Blue",
            "hex": "#002D9C",
            "rgb": [
                0,
                45,
                156
            ]
        },
        {
            "name": "Medium Sea Green",
            "hex": "#24A148",
            "rgb": [
                36,
                161,
                72
            ]
        }
    ],
    "fonts": [
        {
            "name": "IBM Plex Sans",
            "stack": "IBM Plex Sans, system-ui, -apple-system, BlinkMacSystemFont, \\.SFNSText-Regular, sans-serif",
            "weights": [
                100,
                200,
                300,
                400,
                450,
                500,
                600,
                700
            ],
            "source": "Served from 1.www.s81c.com"
        },
        {
            "name": "IBM Plex Mono",
            "stack": "IBM Plex Mono, system-ui, -apple-system, BlinkMacSystemFont, \\.SFNSText-Regular, monospace",
            "weights": [
                100,
                200,
                300,
                400,
                450,
                500,
                600,
                700
            ],
            "source": "Served from 1.www.s81c.com"
        },
        {
            "name": "IBM Plex Serif",
            "stack": "\"IBM Plex Serif\", system-ui, -apple-system, BlinkMacSystemFont, \\.SFNSText-Regular, serif",
            "weights": [
                100,
                200,
                300,
                400,
                450,
                500,
                600,
                700
            ],
            "source": "Served from 1.www.s81c.com"
        }
    ]
}

Other websites using IBM Plex Sans as their main typeface

Digg

digg.com · set in IBM Plex Sans
Save
arxiv.org

arxiv.org · set in IBM Plex Sans
Save
Variety

variety.com · set in IBM Plex Sans
Save
QA Deals

qadeals.tech · set in IBM Plex Sans
Save

Websites whose lead colour is closest to IBM’s

CTV News

ctvnews.ca · 5 days ago
Save
Interia

interia.pl · 20 hours ago
Save
WeTransfer

we.tl · 3 days ago
Save
Open Broadcaster Software

obsproject.com · 4 days ago
Save

Captured from ibm.com on 25 October 2026. SiteStyleGuide isn’t affiliated with or endorsed by IBM; this guide describes the public website for reference.

IBMstyle guide

Title &description

Logo

Favicons

Colour

Balance

Neutrals

White

Near Black

Off White

Light Grey

Colours

Royal Blue

Deep Cornflower Blue

Blue

Light Cornflower Blue

Crimson

Gold

Deep Steel Blue

Indian Red

Light Steel Blue

Fire Brick

Midnight Blue

Medium Sea Green

Gradients

IBM Plex Sans

Type scale

Sizes in use

Elements

Grid

Notes

Questions

Tokens

Share

Run ibm.com?

Also set in IBM Plex Sans

Digg

arxiv.org

Variety

QA Deals

Similar colours

CTV News

Interia

WeTransfer

Open Broadcaster Software

Title &
description