Slack design system

What font does Slack use?

Slack’s website uses Salesforce Avant Garde for headings and Salesforce Sans for body text. Salesforce Avant Garde is not on Google Fonts; the closest free match is Figtree; Salesforce Sans is not on Google Fonts; the closest free match is Figtree.

Slack colour palette

Slack’s home page is light (#FFFFFF background, #000000 text) and uses #730394 for its main actions. Its palette: #FFFFFF, #481A54, #000000, #F9F0FF, #181818, #5C5C5C.

• #FFFFFF
  85.4% · backgrounds
• #481A54
  10% · backgrounds
• #000000
  2.2% · backgrounds, text
• #F9F0FF
  0.8% · backgrounds
• #181818
  0.5% · text
• #5C5C5C
  0.3% · text
• #D17DFE
  0.2% · text
• #9602C7
  0.1% · text
• #730394
  0.1% · backgrounds, text
• #0B5CAB
  0.1% · text

Type scale

Each size the page sets text in, with its weight and line height. Slack’s largest type is 96px at weight 700.

Spacing and shape

Spacing steps the page leans on: 4px, 8px, 12px, 16px, 20px, 24px, 28px, 32px, 36px, 40px, 48px, 56px.

Corner radii: 2px, 3px, 4px, 8px, 12px, 16px, 17px, pill. 9 shadow levels measured.

What makes Slack look like Slack

Mostly neutral: 89% of the page is #FFFFFF and #000000 and other neutrals; #481A54 (10%) fills whole sections.

#D17DFE is an accent: 0.2% of the page, used for text only. Don't fill large areas with it.

#9602C7 is an accent: 0.1% of the page, used for text only. Don't fill large areas with it.

The largest type (96px Salesforce-Avant-Garde) is bold (700), tracked to -0.012em.

Slack DESIGN.md for Claude Code, Cursor and Lovable

A DESIGN.md is the brief an AI coding tool reads before it writes UI. This one carries everything on this page as rules a model follows: the allowed colours and what each is for, the fonts with free stand-ins, the type scale, spacing, corners, and the things Slack’s design never does.

Put it in your project root and ask your tool to follow it: “Read DESIGN.md and build [your product] in this design language.” It describes a style, not Slack’s product, so use your own name, words and images.

Download Slack DESIGN.md · View it as text

As CSS variables

The measured values as CSS custom properties, with free fonts standing in for licensed ones. Use them to learn from or to start a project in a similar style; Slack’s name, logo, words and images are theirs.

@import url("https://fonts.googleapis.com/css2?family=Figtree:wght@300;400;600;700&display=swap");

:root {
  --color-background: #FFFFFF; /* Background */
  --color-surface: #F9F0FF; /* Surface */
  --color-text: #000000; /* Text */
  --color-text-muted: #5C5C5C; /* Text muted */
  --color-border: #C9C9C9; /* Border */
  --color-action: #730394; /* Action */
  --color-on-action: #FFFFFF; /* On action */
  --color-link: #730394; /* Link */
  --color-481a54: #481A54; /* 10% of the page, as fills */
  --font-body: "Salesforce-Sans", "Figtree", sans-serif; /* Salesforce-Sans on the site; Figtree renders */
  --font-display: "Salesforce-Avant-Garde", "Figtree", sans-serif; /* Salesforce-Avant-Garde on the site; Figtree renders */
  --type-display-1: 96px; /* Display 1, weight 700 */
  --type-display-1-leading: 104px;
  --type-display-1-tracking: -0.012em;
  --type-display-2: 76px; /* Display 2, weight 400 */
  --type-display-2-leading: normal;
  --type-display-3: 64px; /* Display 3, weight 700 */
  --type-display-3-leading: 71.68px;
  --type-display-3-tracking: -0.012em;
  --type-display-4: 58px; /* Display 4, weight 600 */
  --type-display-4-leading: 56px;
  --type-display-5: 50.4px; /* Display 5, weight 700 */
  --type-display-5-leading: 56px;
  --type-display-5-tracking: -0.008em;
  --type-display-6: 50px; /* Display 6, weight 700 */
  --type-display-6-leading: 56px;
  --type-display-6-tracking: -0.012em;
  --type-headline-large: 32px; /* Headline Large, weight 700 */
  --type-headline-large-leading: 40px;
  --type-headline-large-tracking: -0.008em;
  --type-headline-small: 24px; /* Headline Small, weight 600 */
  --type-headline-small-leading: normal;
  --type-title-1: 22.56px; /* Title 1, weight 600 */
  --type-title-1-leading: 27.2px;
  --type-title-1-tracking: -0.012em;
  --type-title-2: 22px; /* Title 2, weight 600 */
  --type-title-2-leading: normal;
  --type-title-3: 21px; /* Title 3, weight 400 */
  --type-title-3-leading: normal;
  --type-title-4: 18px; /* Title 4, weight 400 */
  --type-title-4-leading: normal;
  --type-body-large: 16px; /* Body Large, weight 400 */
  --type-body-large-leading: normal;
  --type-body-medium: 15px; /* Body Medium, weight 700 */
  --type-body-medium-leading: normal;
  --type-body-small: 14px; /* Body Small, weight 400 */
  --type-body-small-leading: 21.77px;
  --type-body-small-tracking: -0.002em;
  --type-label: 12px; /* Label, weight 700 */
  --type-label-leading: 18px;
  --type-label-tracking: 0.057em;
  --space-4: 4px;
  --space-8: 8px;
  --space-12: 12px;
  --space-16: 16px;
  --space-20: 20px;
  --space-24: 24px;
  --space-28: 28px;
  --space-32: 32px;

How this was measured

PikSpec’s scanner read the slack.com home page in Chrome at 1440px wide on 14 October 2026: the computed styles of its elements, the fonts that rendered and how much of the page each colour covers. Websites change; capture the page yourself with PikSpec for today’s values, any page, and exports in five formats.

Slack is a trademark of its owner. This page is an independent measurement and is not affiliated with or endorsed by Slack.

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