SiteStyleGuide

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

OpenStreetMap logo

Unofficial style guide

OpenStreetMapstyle guide

OpenStreetMap’s website (openstreetmap.org) uses Segoe UI for its headings and body text. Its palette is led by Dark Sea Green (#7EBC6F), Cornflower Blue (#7092FF) and Crimson (#DC3545), with #212529 text on #FFFFFF. Captured from the live site on 26 October 2026.

Typefaces
Segoe UI, SFMono-Regular, Helvetica Neue
Palette
4 neutrals, 12 colours, 3 gradients
Captured
26 Oct 2026 · added by @sitestyleguide
https://www.openstreetmap.org/ Screenshot
Screenshot of the openstreetmap.org homepage on a desktop screen
Screenshot of openstreetmap.org on a 1440 px desktop screen, 26 Oct 2026.

Identity & metadata

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

Title &
description

Page title
OpenStreetMap
● 13 / 60 characters
Meta description
OpenStreetMap is a map of the world, created by people like you and free to use under an open license.
● 102 / 160 characters
Site name
OpenStreetMap
og:title
OpenStreetMap
og:description
OpenStreetMap is a map of the world, created by people like you and free to use under an open license.
Language
en
Theme colour
#ffffff

In search results

OpenStreetMaphttps://www.openstreetmap.org/

OpenStreetMap

OpenStreetMap is a map of the world, created by people like you and free to use under an open license.

When shared

The image OpenStreetMap shares with links

openstreetmap.org

OpenStreetMap

OpenStreetMap is a map of the world, created by people like you and free to use under an open license.

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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 (#212529) and white, using WCAG 2 ratios: 4.5 for body text, 3 for large text.

Colour

Balance

How much each colour is used
  • White 30.3%
  • Black 17.7%
  • Dark Sea Green 8.7%
  • Cool Near Black 7.5%
  • Cornflower Blue 7.2%
  • Off White 6.3%
  • Crimson 5.4%
  • Gold 4.2%
  • Sky Blue 4.2%
  • Lime Green 2.2%
  • Blue 1.2%
  • Corn Silk 1.2%
  • Deep Steel Blue 1%
  • Dodger Blue 1%
  • Royal Blue 0.9%
  • Light Steel Blue 0.9%

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
    15.43:1 AAA
    On white
    —

    Background, text, border · --bs-btn-hover-color, --bs-btn-active-color

  • Black

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    0 0 0 100
    On text
    1.36:1 Fail
    On white
    21.00:1 AAA

    Text, background, graphic · --bs-btn-hover-color, --bs-btn-active-color

  • Cool Near Black

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    20 10 0 84
    On text
    —
    On white
    15.43:1 AAA

    Text, background, graphic · body, --bs-btn-border-color

  • Off White

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    3 1 0 6
    On text
    13.01:1 AAA
    On white
    1.19:1 Fail

    Background, border · .form-control:disabled, .form-select:disabled

Colours

Brand colours and accents, most used first
  • Dark Sea Green

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    33 0 41 26
    On text
    6.84:1 AA
    On white
    2.26:1 Fail

    Background, text, border · header nav .show>.btn-outline-primary.dropdown-toggle, --bs-btn-border-color

  • Cornflower Blue

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    56 43 0 0
    On text
    5.32:1 AA
    On white
    2.90:1 Fail

    Background, text, border · --bs-btn-border-color, --bs-btn-disabled-border-color

  • Crimson

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    0 76 69 14
    On text
    3.41:1 AA large
    On white
    4.53:1 AA

    Background, text, border · --bs-btn-border-color, --bs-btn-disabled-border-color

  • Gold

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    0 24 97 0
    On text
    9.46:1 AAA
    On white
    1.63:1 Fail

    Background, text, graphic · --bs-btn-border-color, --bs-btn-disabled-border-color

  • Sky Blue

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    95 16 0 6
    On text
    7.88:1 AAA
    On white
    1.96:1 Fail

    Background, text, graphic · --bs-btn-border-color, --bs-btn-disabled-border-color

  • Lime Green

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    40 0 59 23
    On text
    7.25:1 AAA
    On white
    2.13:1 Fail

    Background, text · .maplibregl-map .maplibregl-control-container .maplibregl-ctrl button.maplibregl, .site-about #content .attr h1 span

  • Blue

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    85 69 0 13
    On text
    2.16:1 Fail
    On white
    7.15:1 AAA

    Text, graphic · a, .leaflet-popup-content-wrapper a

  • Corn Silk

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    0 5 20 0
    On text
    13.92:1 AAA
    On white
    1.11:1 Fail

    Background · mark, .bg-warning-subtle

  • Deep Steel Blue

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    95 40 0 26
    On text
    3.02:1 AA large
    On white
    5.11:1 AA

    Used · --bs-btn-bg, --bs-btn-border-color

  • Dodger Blue

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    80 34 0 15
    On text
    4.48:1 AA large
    On white
    3.45:1 AA large

    Used · --bs-btn-bg, --bs-btn-border-color

  • Royal Blue

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    61 41 0 40
    On text
    2.25:1 Fail
    On white
    6.84:1 AA

    Used · --bs-btn-bg, --bs-btn-border-color

  • Light Steel Blue

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    100 34 0 29
    On text
    3.16:1 AA large
    On white
    4.88:1 AA

    Used · --bs-btn-bg, --bs-btn-border-color

Gradients

  • linear-gradient(to top, rgba(218, 252, 205, 0.9) 0%, rgba(173, 226, 176, 0.9) 100%)

  • linear-gradient(to top, rgba(245, 255, 240, 0.9) 0%, rgba(203, 228, 205, 0.9) 100%)

  • linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent)

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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.

Segoe UI

Aa 400

Segoe UI

System font, or not loaded on this page · weights 400 · body · shown in a stand-in if you don’t have it

Aa 400

SFMono-Regular

System font, or not loaded on this page · shown in a stand-in if you don’t have it

Aa 400

Helvetica Neue

System font, or not loaded on this page · shown in a stand-in if you don’t have it

Aa 700

Lucida Console

System font, or not loaded on this page · weights 700 · shown in a stand-in if you don’t have it

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

Type scale

From the site’s CSS
Heading 1 calc(1.375rem + 1.5vw) / 1.2 weight 500

OpenStreetMap

Heading 2 calc(1.325rem + .9vw) / 1.2 weight 500

OpenStreetMap

Heading 3 calc(1.3rem + .6vw) / 1.2 weight 500

OpenStreetMap

Heading 4 calc(1.275rem + .3vw) / 1.2 weight 500

OpenStreetMap

Heading 5 1.25rem · 20 px / 1.2 weight 500

OpenStreetMap

Heading 6 1rem · 16 px / 1.2 weight 500

OpenStreetMap

Body 14px / 1.5 weight 400 · Segoe UI

OpenStreetMap is a map of the world, created by people like you and free to use under an open license.

Paragraph 12px

OpenStreetMap is a map of the world, created by people like you and free to use under an open license.

Small .875em · 14 px

OpenStreetMap is a map of the world, created by people like you and free to use under an open license.

Link 11px / 30px weight 400

Read more about OpenStreetMap

Sizes in use

Most common across the site
  • 22pxline 1.2 · 2 rules
  • 20px8 rules
  • 18px1 rules
  • 17pxline 1.3 · 2 rules
  • 16pxline 1.5 · 11 rules
  • 14px20 rules
  • 12pxline 0 · 4 rules
  • 10px3 rules

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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

header nav .show>.btn-outline-primary.dropdown-toggle · #7EBC6F

Link

Read our latest news today.

a · #2244DD

Corner radius

  • 0.375rem · 12×
  • 50% · 5×
  • 1rem · 5×
  • 0.25rem · 4×
  • 0.5rem · 4×

Shadows

  • 0 0 0 .25rem rgba(112,146,255,.25)
  • 0 0 0 .25rem rgba(126, 188, 111, 0.25)
  • 0 0 0 .25rem rgba(220, 53, 69, 0.25)

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Layout

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

Grid

Breakpoints

576
768
992
1200
1400

On a scale of 0 to 1440 px.

Content widths (max-width)

1140 px
960 px
760 px
720 px
540 px
320 px

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Notes

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

Notes

  • ● FineThe title is 13 characters, short enough to show in full in search results.

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Questions

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

Questions

What font does OpenStreetMap use?
OpenStreetMap’s website uses one typeface: Segoe UI (headings and body text), a system font.
What are OpenStreetMap’s brand colours?
The main colours on openstreetmap.org are Dark Sea Green (#7EBC6F), Cornflower Blue (#7092FF), Crimson (#DC3545), Gold (#FFC107), Sky Blue (#0DCAF0) and Lime Green (#76C551).
What colour is OpenStreetMap’s text and background?
Body text is #212529 on a #FFFFFF background.
Where is OpenStreetMap’s logo from?
The logo shown in this guide was found on openstreetmap.org’s homepage. For official logo files and usage rules, check OpenStreetMap’s own brand or press page.
Is this OpenStreetMap’s official style guide?
No. SiteStyleGuide made it from openstreetmap.org’s public web pages on 26 October 2026, and isn’t affiliated with OpenStreetMap. Members can refresh a guide after 90 days to pick up changes.

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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

openstreetmap-org-tokens.css

Download

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

/* openstreetmap.org design tokens, from SiteStyleGuide (https://sitestyleguide.com/openstreetmap.org) */
:root {
  /* Colours */
  --text: #212529;
  --background: #FFFFFF;
  --colour-white: #FFFFFF;
  --colour-black: #000000;
  --colour-cool-near-black: #212529;
  --colour-off-white: #E9ECEF;
  --colour-dark-sea-green: #7EBC6F;
  --colour-cornflower-blue: #7092FF;
  --colour-crimson: #DC3545;
  --colour-gold: #FFC107;
  --colour-sky-blue: #0DCAF0;
  --colour-lime-green: #76C551;
  --colour-blue: #2244DD;
  --colour-corn-silk: #FFF3CD;
  --colour-deep-steel-blue: #0971BD;
  --colour-dodger-blue: #2B90D9;
  --colour-royal-blue: #3B5998;
  --colour-light-steel-blue: #0077B5;
  --gradient-1: linear-gradient(to top, rgba(218, 252, 205, 0.9) 0%, rgba(173, 226, 176, 0.9) 100%);
  --gradient-2: linear-gradient(to top, rgba(245, 255, 240, 0.9) 0%, rgba(203, 228, 205, 0.9) 100%);
  --gradient-3: linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);

  /* Typefaces */
  --font-body: system-ui, -apple-system, 'Segoe UI', 'Roboto', 'Helvetica Neue', 'Noto Sans';
  --font-other: 'SFMono-Regular', 'Menlo', 'Monaco', 'Consolas', 'Liberation Mono', 'Courier New';
  --font-buttons: 'Tahoma', 'Verdana', sans-serif;

  /* Type scale */
  --text-h1: calc(1.375rem + 1.5vw);
  --leading-h1: 1.2;
  --text-h2: calc(1.325rem + .9vw);
  --leading-h2: 1.2;
  --text-h3: calc(1.3rem + .6vw);
  --leading-h3: 1.2;
  --text-h4: calc(1.275rem + .3vw);
  --leading-h4: 1.2;
  --text-h5: 1.25rem;
  --leading-h5: 1.2;
  --text-h6: 1rem;
  --leading-h6: 1.2;
  --text-body: 14px;
  --leading-body: 1.5;
  --text-p: 12px;
  --text-small: .875em;
  --text-a: 11px;
  --leading-a: 30px;

  /* Shape */
  --radius-1: 0.375rem;
  --radius-2: 50%;
  --radius-3: 1rem;
  --radius-4: 0.25rem;
  --radius-5: 0.5rem;

  /* Layout (breakpoints can’t be used in media queries as variables; they’re here for reference) */
  --breakpoint-1: 576px;
  --breakpoint-2: 768px;
  --breakpoint-3: 992px;
  --breakpoint-4: 1200px;
  --breakpoint-5: 1400px;
  --max-width-1: 1140px;
  --max-width-2: 960px;
  --max-width-3: 760px;
  --max-width-4: 720px;
  --max-width-5: 540px;
  --max-width-6: 320px;
}

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Share

Links open each service’s own share page. Nothing from them loads here.

Share

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Link to this guide from your own site, so your team, designers and agencies can find your colours and fonts in one place.

View our style guide on SiteStyleGuide
<a href="https://sitestyleguide.com/openstreetmap.org" title="OpenStreetMap style guide on SiteStyleGuide"><img src="https://sitestyleguide.com/public/badge.svg" alt="View our style guide on SiteStyleGuide" width="200" height="44"></a>

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Other websites using Segoe UI as their main typeface
Websites whose lead colour is closest to OpenStreetMap’s

Captured from openstreetmap.org on 26 October 2026. SiteStyleGuide isn’t affiliated with or endorsed by OpenStreetMap; this guide describes the public website for reference.