Typography

These characters give your characters more character, from the quick brown fox to the lazy dog it's always jumping over.

download Fonts

Highlights

Larsseit is our hero (and headline) font; we use Slack Circular for most everything else
We love localization, and have the guidelines and international fonts to prove it
Before you type, kindly consider our casing and punctuation best practices

Type stack

Our brand fonts are Larsseit and Slack Circular. The following tables outline how best to use them.

For specific web typography guidelines, see Spacesuit.

Headlines

Use Larsseit for headlines. For headings on embedded or printed collateral, always typeset it with optical kerning and use sentence case. Do not set in all caps or all lowercase.

Download Larsseit

36/41

Slack is your digital HQ

Larsseit Bold
Line spacing: 125%

24/30

Simpler, more pleasant
and more productive

Larsseit Bold
Line spacing: 125%

18/22.5

It’s flexible. It’s inclusive. It’s connected.

Larsseit Bold
Line spacing: 125%

12/15

Slack is software that people actually enjoy using.

Larsseit Bold
Line spacing: 125%

Content

Use Slack Circular for most other text, including paragraphs. For embedded or printed collateral, always typeset it with optical kerning. Default to sentence case—title case is okay for proper nouns and attributions. Reserve all-caps treatment for eyebrows and buttons, and never set type in all lowercase. Note, we do use Larsseit for pull quotes. Hey, sometimes you have to break the rules.

Download Slack Circular

Body copy

10/14

Why should organizations use Slack? Excellent question. Slack is a new way for your entire company to communicate. It replaces email with something faster, better organized and more secure. Instead of one-off email chains, all your communication is organized into channels that are easy to create, join and search.

Slack Circular
Line spacing: 140%

Eyebrow

10/12.5

SLACK FOR ALL

Slack Circular
Line spacing: 125%

Pull quote

18/22.5

“We believe that the advantages are so great that a shift to working on Slack, or something like it, is inevitable.”

Larsseit Thin Italic
Line spacing: 140%

Attribution

10/12.5

Marcel Gherkins
Slack Spokesperson

Slack Circular Bold, Slack Circular Regular
Line spacing: 125%

Product font

We use Lato in our product and when creating product UIs for demos and marketing, with the exception of the localized languages noted below.

Download Lato

System fallbacks

When our brand fonts are not supported, default to these fonts.

Presentations

Use Inter for Google Slides presentations
If converting Google Slides to a Keynote or PowerPoint presentation, use Larsseit throughout for headlines and body text
If the presentation originates in Keynote or PowerPoint, follow regular brand font guidelines

Email

Use Helvetica Neue for email

Localized languages

To accommodate for differences in character size, word length and grammar, some of our languages use different Slack brand fonts. Regardless of font, please apply the same line spacing as advised above.

Japanese

Use Tazugane as the brand font and Noto Sans for product UIs. Set font size 15% smaller than English.

Russian

Use the Cyrillic version of Circular as the brand font. Set font size about 10% smaller than English.

Download Cyrillic version of Circular

Korean, Simplified Chinese, Traditional Chinese

Use Noto Sans as the brand font.

Download Noto Sans

French, Italian, German, Spanish and Portuguese

Use our brand fonts. Set font size 10% smaller than English to allow for 20–30% more characters.

Styling type

Capitalization and punctuation can be just as critical to copy as typography. The following offers an overview of our editorial style. For more details, see our writing guidelines.

Casing

Always default to sentence case for copy; use title case only for attributions and proper nouns. Reserve all-caps treatment for eyebrows and buttons, and never set type in all lowercase.

Punctuation

We use standard punctuation in body copy. Don’t use punctuation in headlines, eyebrows, links or buttons, unless it is necessary for comprehension. A few other considerations:

Don’t use ampersands (&) or plus signs (+) in place of "and"
Don’t use the Oxford/serial comma
Use en dashes (–), not hyphens, for a span or range of numbers, dates or times
Don’t use spaces around em dashes
Set end punctuation inside closing quotation marks

Usage

Simplicity is best. Be mindful of the hierarchy between type style, size, weight and color. Enough variation provides a pleasant contrast. Too much becomes a distraction.