Slack brand system audit
Slack runs a technical geometry on a neutral white canvas, set in Salesforce Avant Garde. 8 of 9 contrast pairings pass WCAG 2.1 AA and the homepage scores 92/100 for technical SEO.
3 dimensions
- Brand consistency
- 100
- WCAG 2.1 contrast
- 89
- SEO readiness
- 92
01Brand palette
consistency 100/10002Typography
Body copy set in the brand’s text face, at reading size and comfortable measure.
- Headings
- Salesforce Avant Garde
- previewed with Poppins
- Body
- Salesforce Sans
- previewed with Lato
- Mono / data
- SF Mono
- previewed with JetBrains Mono
03UI vibe & geometry
- Radius style
- Technical · 4-6 px
- Controls
- 4px
- Cards
- 16px
- Surface
- Neutral white · #FFFFFF / #FFFFFF / #C9C9C9
04WCAG 2.1 contrast
8/9 AA · 6/9 AAA| Pairing | Colors | Ratio | AA | AAA |
|---|---|---|---|---|
| AaBody text on surface | #1D1C1D / #FFFFFF | 16.99:1 | Pass | Pass |
| AaSecondary text on surface | #5C5C5C / #FFFFFF | 6.69:1 | Pass | Fail |
| AaPrimary as link/text on surface | #730394 / #FFFFFF | 9.68:1 | Pass | Pass |
| AaButton label on primary | #FFFFFF / #730394 | 9.68:1 | Pass | Pass |
| AaAccent on surface | #36C5F0 / #FFFFFF | 2.02:1 | Fail | Fail |
| AaSecondary on surface | #4A154B / #FFFFFF | 14.00:1 | Pass | Pass |
| AaWhite on secondary | #FFFFFF / #4A154B | 14.00:1 | Pass | Pass |
| AaDark mode: text on canvas | #F5F5F7 / #0E0A11 | 18.02:1 | Pass | Pass |
| AaDark mode: primary on canvas | #C514FA / #0E0A11 | 4.54:1 | Pass | Fail |
05SEO readiness
12 of 14 checks pass- passTitle tag45 chars: “Slack | AI Work Platform & Productivity Tools”
- warnMeta description173 chars
- passSingle H1 heading1 H1 element(s)
- passCanonical URLhttps://slack.com/
- passHTML lang attributelang="en-US"
- passMobile viewportwidth=device-width, initial-scale=1
- passOpen Graph tags3/3 of og:title, og:description, og:image
- passTwitter / X cardsummary_large_image
- warnStructured data (JSON-LD)No JSON-LD found
- passHTTPSServed over HTTPS
- passIndexable (robots meta)No robots restrictions
- passXML sitemap3162 URLs · https://slack.com/sitemap.xml
- passFavicon / touch iconIcon link present
- passImage alt text100% of 79 images
slack.com brand audit FAQ
What are Slack's brand colors?
Slack uses #730394 as its primary color, #4A154B as secondary and #36C5F0 as accent, on a #FFFFFF surface with #1D1C1D text (snapshot from 11 Nov 2026).
Which fonts does slack.com use?
Headings are set in Salesforce Avant Garde (free stand-in: Poppins) and body text in Salesforce Sans (free stand-in: Lato). Proprietary faces are paired with the closest free Google Fonts family for documents and previews.
Does slack.com pass WCAG contrast checks?
8 of 9 key color pairings pass WCAG 2.1 AA and 6 pass AAA. The full PDF report suggests a passing replacement color for every pairing that fails.
What is slack.com's technical SEO score?
The homepage scores 92/100 across 14 technical SEO checks, with 12 passing: title, meta description, H1, canonical, Open Graph, structured data, sitemap, HTTPS and image alt text among them.
How was this Slack audit made?
SuiteAnvil StyleExtract read the public homepage of slack.com, its CSS, logo, metadata and sitemap. Run the same audit on any URL for free and export the PDF report or Tailwind v4 tokens.
Take this audit further.
The full report adds prioritized findings, the tonal scale, dark-mode tokens and a developer appendix with Tailwind v4, CSS variables, .cursorrules and DESIGN.md.
Embed on your site (free)Link the Slack press kit or show the live brand score badge.
A plain text link to the hosted press & brand kit, e.g. in your site footer or press page.
<a href="https://suiteanvil.com/kit/slack.com">Press & Brand Kit</a>
The badge links to the audit and updates after each rescan. Score: mean of brand consistency and the share of WCAG 2.1 AA color pairings.
<a href="https://suiteanvil.com/audit/slack.com"><img src="https://suiteanvil.com/api/badge/slack.com.svg" alt="Brand and WCAG score for slack.com by SuiteAnvil" height="20"></a>[](https://suiteanvil.com/audit/slack.com)Snapshot of slack.com’s public website from 11 Nov 2026, produced by SuiteAnvil StyleExtract. Values change as the site evolves. Slack and its marks belong to their owner; SuiteAnvil is not affiliated with or endorsed by Slack.
SuiteAnvil extracts publicly visible design tokens, logos, and font references for workflow automation. You are responsible for ensuring you hold valid commercial rights or client authorization for any proprietary fonts, trademarks, and brand assets before commercial publication. Licensing notice