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(Brand guidelines) // Productivity software

Slack brand
guidelines

Slack’s logo, colors, fonts, voice, and dos and don’ts, from the Brand Skill Rainbrand built from slack.com.

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About Slack

Slack is an AI-powered work platform that brings people, conversations, apps, and agents together. Its brand combines clear, practical guidance with an energetic, approachable voice and a focus on making work simpler, more connected, and more productive.

Use the Slack logo, the four-color octothorpe beside the slack logotype, for primary identification. On slack.com it carries the “from Salesforce” endorsement. Use the standalone octothorpe where space is limited.

Keep clear space around the logo at least the length of one pill shape in the octothorpe. Keep the octothorpe’s colors, size and position against the logotype as drawn.

Slack colors

  • Aubergine

    Signature dark background

    HEX
    RGB

  • Slack Purple

    Primary buttons and accents

    HEX
    RGB

  • Blue

    Octothorpe color and accent

    HEX
    RGB

  • Green

    Octothorpe color

    HEX
    RGB

  • Yellow

    Octothorpe color

    HEX
    RGB

  • Pink

    Octothorpe color

    HEX
    RGB

  • Near-black

    Text

    HEX
    RGB

  • White

    Backgrounds and text on Aubergine

    HEX
    RGB

Slack fonts

  • Salesforce Avant Garde

    Main heading · 700, Secondary heading · 600

  • Salesforce Sans

    Supporting heading · 600, Body · 400, Button · 700

Font names only. The Brand Skill download doesn’t include font files.

Slack’s voice

Slack’s voice is direct, friendly, and optimistic. Lead with a useful outcome, speak to people in plain language, and make complex capabilities feel approachable. Use active, conversational phrasing and a light touch of playfulness; keep enterprise and security messaging confident without sounding alarmist.

  • “All your people and AI agents working together”
  • “AI in Slack delivers action, not just answers”
  • “Let your people connect like people”
  • “Bring conversations out of the inbox”
  • “Work without worry”

Dos and don’ts

Do

  • Leave clear space around the logo at least the length of one pill shape in the octothorpe; use the octothorpe alone where space is tight.
  • Use Aubergine and Slack Purple as the signature colors, and keep strong contrast between text and its background.
  • Make copy conversational, benefit-led, and easy to understand. Use active language and a human, encouraging tone.
  • Keep product imagery grounded in Slack’s real experience: channels, conversations, canvases, search, automation, and collaboration.

Don’t

  • Don’t shuffle or change the colors of the octothorpe, or change its size or position against the logotype.
  • Don’t re-create the logotype in another typeface, outline it, or add shadows and other effects.
  • Don’t use old versions of the Slack logo.
  • Don’t make the voice stiff, vague, or needlessly technical when a clear, human phrase will do.

Slack imagery

138 images from slack.com, in 2 files of the Brand Skill. Each file starts with its guidance, then shows the images it refers to.

Brand artwork and editorial imagery

90 images

Slack’s marketing imagery supports clear, lively storytelling about working together. It includes friendly dimensional illustrations, colorful geometric forms, product-led scenes, editorial cards, and photography of people working. Use this imagery to make the brand feel human, practical, and optimistic; preserve the role of each image in its surrounding design.

  • A cheerful digital graphic features the bold black text "Say hello to Slackbot" centered on a soft, pastel gradient background of blue, green, yellow, and pink.
  • The Slack logo, featuring a colorful octothorp-like symbol of four speech bubbles and four pills in blue, green, yellow, and red, sits centered on a clean…
  • A graphic collage of software UI elements emphasizing security and privacy.
  • A stylized, three-dimensional illustration of a padlock rendered in flat green, white, and black colors.
  • The Slack logo is centered against a deep solid purple background.
  • A vertical graphic features the multi-colored Slack octothorpe logo above a black plus sign, followed by the FedRAMP logo showing a white 'FR' inside a navy…
  • A minimalist isometric illustration features a light blue document with three thick black lines and a teal cursive signature on a dotted line.
  • A minimalist isometric illustration of a closed book with a bookmark hanging from the top.
  • A white, rounded-corner diamond tile featuring the multi-colored Slack logo floats at an angle against a deep purple background.
  • The Slack logo, featuring a colorful octothorpe made of blue, green, yellow, and pink speech bubbles and lozenges, is set against a plain white background.
  • This screenshot features a clean Slackbot home interface set against a deep purple sidebar.
  • A screenshot of a digital collaboration platform interface displays a document titled "Datanet Meeting" under a deep purple sidebar navigation.
  • A software interface screenshot displays a deep purple sidebar and a light grey main workspace titled "Good Morning, Carmen!".
  • A digital UI graphic displays a Salesforce 'Opportunity' page for 'Acme Inc Enterprise Renewal FY27' layered behind an active Slack conversation window.
  • A vibrant 3D graphic features the Slack logo centrally positioned on a large, rounded white tile.
  • A digital graphic of a white Gmail notification pop-up window centered on a soft lavender background.
  • A vertical digital mockup features a smartphone displaying a Slack mobile web interface against a pale green background.
  • A high-fidelity software screenshot of a dark-themed dashboard interface labeled Acme Inc, specifically showing the Skills management page.
  • A colorful minimalist graphic logo centered on a solid deep plum purple background.
  • The Slack logo, featuring a colorful hash mark icon in blue, green, red, and yellow, sits to the left of the lowercase black text "slack".
  • A clean graphic illustration shows a Slack-like interface and a code comparison window floating against a curved purple grid background.
  • A close-up UI graphic shows a white hand cursor clicking the Slack logo in a Mac-style top menu bar set against a purple gradient background.
  • A flat isometric illustration depicts a three-dimensional grid of colorful cubes forming a larger cubic structure with gaps in between.
  • An isometric 3D illustration depicts a Rubik's-style cube made of smaller multicolored blocks with several pieces missing or floating.
  • A minimalist isometric illustration of a capitol building or courthouse rendered in a monochromatic palette of light blue, teal, and navy.
  • An isometric 3D illustration of a neoclassical government building, reminiscent of the U.S.
  • A minimalist isometric illustration of a large padlock standing on a split-color background of cream and light blue.
  • A vibrant cyan circle featuring a white outline of a locked padlock serves as the central focal point.
  • A 3D-rendered silver padlock and key integrated as a single object, centered against a dark navy circular backdrop.
  • A dark blue line-art icon of a square containing a hashtag and a small padlock sits within a large, cream-colored droplet shape.
  • A split-screen software graphic showcases the integration between Slack and Salesforce against a light blue background.
  • A vibrant flat illustration shows two small stylized figures interacting with a large digital clipboard.
  • A flat, colorful illustration features a small person sitting cross-legged at the center, engrossed in a blue tablet.
  • A flat-style vector illustration depicts a dark-skinned hand inserting a golden clock-faced coin into a pink piggy bank.
  • A flat-style illustration depicts a messaging application interface against a golden yellow background with subtle white sparkles.
  • A UI graphic shows a browser window containing an 'Executive Briefing' template and a floating modal window for an 'Executive Briefing Request' against a…
  • A flat-style digital graphic features a white laptop screen displaying the 'Project Yosemite' interface against a bright blue background.
  • A digital graphic illustrates a software 'Workflow Builder' window superimposed over a messaging interface for an '#hr-pto' channel.
  • A vibrant isometric illustration on a light pink background depicts a digital workspace as a construction site.
  • A UI graphic of a video call interface displays a 3x4 grid of twelve diverse, smiling individuals against colorful solid backgrounds on a warm beige window.
  • A digital screenshot displays a group video call interface within a web browser window against a muted teal and orange gradient background.
  • A flat vector illustration shows a pair of stylized hands reaching toward a laptop screen displaying a digital workspace interface.
  • A flat, minimalist illustration depicts two colleagues giving each other a high-five through separate digital browser windows on a mustard yellow background.
  • A 3D isometric illustration features a thick stack of pale yellow square notes against a solid olive green background.
  • A vibrant digital illustration features a stack of three oversized, empty speech bubbles in light pink, green, and white, set against a dark purple background.
  • A close-up UI screenshot of a communication app features a notification bubble stating 'AI notes and transcription are on' accompanied by a sparkling icon.
  • A close-up graphic of a software interface showing an AI-powered search function in a messaging application.
  • A close-up UI screenshot showcases a Slack 'Channel summary' overlaying an '# account-acme' chat window.
  • A digital interface mockup showcasing Slack's translation feature within a channel named #global-campaign.
  • A smiling Black woman with curly hair sits at a laptop, framed within a curved purple shape.
  • A smiling professional woman is framed within a purple archway as she works on a laptop in a bright office.
  • A horizontal graphic features four headshots in circular frames—two men and two women—arranged against a pale lavender backdrop with darker purple cloud-like…
  • A smiling woman wearing glasses looks at a laptop, framed within a large purple arch.
  • A solid deep purple graphic element in the shape of a capsule or pill sliced in half.
  • A single, solid-colored olive green graphic element in the shape of a teardrop or a flattened droplet.
  • A clean, flat-style vector graphic displays various icons connected by gray dotted lines on a white background, centered around the colorful Slack hash logo.
  • A stylized flat vector illustration of the Earth features the colorful Slack logo at its center.
  • A 3D isometric graphic features three stylized, colorful skyscrapers rising from a white digital interface board with a deep purple border.
  • A collage of four lifestyle photos set against a vibrant purple and lilac background, each framed in a rounded shape to show professionals in different…
  • A UI graphic set against a solid purple backdrop showcases a Slack-style thread and an AI-generated presentation.
  • A 3D graphic features a white user interface card centered on a deep purple gradient background.
  • A flat, textured illustration depicts a stylized messaging app interface with a dark purple sidebar and vertical icons.
  • A vertical digital illustration of a royal blue notebook or file folder featuring a white padlock icon centered in a dotted square.
  • A grainy, textured illustration of a code editor window with a dark purple background and a light gray browser bar on top.
  • A grainy, hand-drawn illustration of a yellow binder or notebook with a white stippled spine and three silver rings.
  • The Slack logo and wordmark are centered against a solid deep aubergine background.
  • A clean UI graphic shows a deep purple desktop messaging app window paired with a light-colored smartphone interface on the right.
  • A 3D isometric app icon for Slack floats against a solid deep purple background.
  • A vertical stack of four matte geometric 3D shapes balances precariously against a solid deep purple background.
  • A diverse group of diverse people interact via digital interfaces in this textured, flat-style illustration set against a muted red background.
  • A close-up photo shows several large shards of a broken ceramic plate scattered across a textured gray concrete floor.
  • A stylized flat illustration shows the back of a woman with long dark hair tied in a ponytail as she sits at a desk facing a large computer monitor.
  • A screenshot of a digital workspace titled 'Project overview,' featuring an illustrated banner of four white origami paper boats floating on a calm,…
  • A screenshot of a software interface titled 'Feedback tracker' displays a structured table for project management.
  • A screenshot of a digital collaboration platform's onboarding interface, featuring a banner with stylized wooden block illustrations of houses and trees.
  • A screenshot of a project management canvas titled # marketing-campaign, featuring a stylized header illustration of an orange lighthouse casting light…
  • A screenshot of a digital Bug tracker interface organizes tasks into three columns labeled New, Triaged, and In progress.
  • A digital interface screenshot displays the Key documents tab of a project workspace, featuring a vibrant green header with a textured, illustrated pattern…
  • A screenshot of a software interface titled 'Deal tracker' within a '# sales-deals' channel.
  • A screenshot of a digital workspace titled 'Shared resources' featuring a stylized header illustration of a cozy desk with a computer and a white cat in a…
  • A software interface screenshot displays a 'Help requests tracker' within a workplace messaging app.
  • A screenshot of a Slack interface shows a '# coaching-' channel with the 'Development resources' tab active.
  • A classic yellow emoji face expresses anxiety or stress with a single blue teardrop of sweat on its forehead.
  • A screenshot of the Slack desktop interface with a deep purple sidebar is centered on a laptop screen against a light blue and purple gradient background.
  • A deep purple, rounded square 3D icon features three stylized white four-pointed stars on its face.
  • A deep purple rounded-square icon featuring a stylized white graphic of a person wearing sunglasses inside a hood with small ears, resembling a bear.
  • A deep plum-purple 3D app icon featuring the white Slack logo in the center.
  • A 3D-styled square app icon with rounded corners in deep purple, featuring a slightly elevated perspective that shows a thin lavender side edge.
  • A trio of dark purple 3D communication and utility icons float in space, featuring a central Slack logo tile flanked by a paper airplane and a four-pointed…
  • A horizontal row of nine white, pill-shaped buttons with soft drop shadows, each displaying an accessibility-related emoji followed by a tally number.

Product and experience imagery

48 images

Use authentic Slack product imagery to show work happening in context: conversations in channels, collaboration with agents, canvases, huddles, search, templates, and workflow automation. Product screenshots are part of the visual language; preserve the interface itself when depicting Slack. Use promotional scenes and illustrations to make the benefit clear without obscuring the product experience.

  • A screenshot of a purple-themed Slack workspace interface titled "Acme" with the channel "# product-launch" active.
  • A screenshot of a Slack interface shows a split-pane view with a '# payment-api' channel on the left and a detailed thread on the right.
  • A software interface screenshot displays a search result for "What is project acme?" within the Luna Lab application.
  • A screenshot of a Slack interface showing a direct message conversation with Slackbot.
  • A screenshot of a messaging application called AstroCraft with a dark purple sidebar and a main white chat window titled '# sales-support'.
  • A screenshot of a purple Slack Huddle interface shows Rebecca screen-sharing a Canvas document titled Product launch Strategy.
  • A screenshot of the Slack desktop interface shows a conversation in the '# astrocraft-account' channel.
  • A screenshot of the Slack Workflow builder interface shows the creation of a 'Weekly updates' automation.
  • A screenshot of a software interface for a Kanban board titled 'Customer Incidents,' displaying columns for 'In Progress,' 'Urgent,' 'Resolved,' and…
  • A high-fidelity software screenshot showcases a 'Templates' library within the Luna Lab interface, featuring a purple sidebar and a clean white main panel.
  • A clean software interface shows an Apps directory within a productivity platform like Slack, featuring integrated cards for Atlassian, Zoom, Github, Google…
  • A screenshot of the Slack Developers 'Tools' webpage in dark mode, featuring a navigation sidebar on the left and categorical cards for development resources.
  • A clean UI screenshot shows a white login modal for 'Acme Inc' over a soft grey background, anchored by a dark purple shield icon.
  • A small, friendly white robot with a purple and black core floats diagonally against a soft pastel gradient background.
  • A white, humanoid robot with a Slack logo on its chest and black sunglasses stands confidently on a curved purple surface against a pale blue gradient.
  • A digital interface screenshot depicts a Slack huddle with four participants displayed in a grid over a painted landscape background.
  • A screenshot of a professional messaging interface for #project-acme within Acme Inc.
  • A clean software interface graphic displays an automated workflow builder with text stating, 'Get feedback in a form, and then send responses in a channel…
  • A UI graphic shows a Slack message interface featuring a post from Zoe Maxwell about Project Beta and a Tableau app notification sharing a 'Web Traffic FY24'…
  • A clean screenshot of a 'Project tracker' digital interface displaying an organized table of eight office tasks like 'Finalize seating chart' and 'Secure…
  • A screenshot of a software product brief template features a stylized banner illustration of people gathered around a futuristic white building in a mountain…
  • A clean screenshot of a project management dashboard titled "Quarterly planning" organized into three sections by priority level using gold star icons.
  • A digital workspace screenshot titled "Objectives and Key Results (OKRs)" for Fiscal Year 2023, Quarter 4.
  • A screenshot of an 'Employee Onboarding' digital document featuring a warm, illustrated banner of a shelf with books, a toy car, and a fish tank.
  • A digital document titled 'Weekly Sync' features a whimsical illustrated banner of a person launching a paper airplane across urban balconies.
  • A screenshot of a digital 'Agenda' document page featuring a panoramic, illustrated banner of people on city balconies tossing a colorful paper airplane…
  • A screenshot of a digital workspace titled "Shared Resources" featuring a bold header banner with stylized orange and black abstract illustrations of desk…
  • A screenshot of a 'Help requests' dashboard featuring three sci-fi themed kanban cards organized under 'New,' 'Not started,' and 'In progress' columns.
  • A screenshot of a professional collaboration app interface shows a '# project-acme' channel with a list of sales opportunities like 'Beta - Renewal' and…
  • A software interface graphic illustrates how to use Bolt for JavaScript to automate messages.
  • A software UI screenshot showing a message from Lisa Dawson in a workspace being flagged by data loss prevention rules while a 'Create rule' window overlays…
  • A diverse group of smiling professionals is gathered around a light wood conference table in a modern, glass-walled office.
  • A screenshot of a Slack interface against a vibrant purple background features a colorful Slack logo in the top-right corner.
  • A clean graphic interface against a pale blue background features two floating white UI cards and a circular 'Slack Community' logo.
  • A close-up UI screenshot of a Slackbot interaction window features a colorful, smiling robot icon and the greeting, "Good afternoon, Zoe!
  • A digital interface mock-up of a video call titled "Huddle in #external-project-acme" with three participants.
  • This screenshot illustrates an AI search feature within a dark purple workplace communication app.
  • A digital graphic showcasing an AI interaction within a collaboration platform.
  • A white user interface card for the 'Claude' app is surrounded by various software application icons.
  • A clean UI screenshot of a chat interface titled 'Thread' displaying an interaction with an AI assistant.
  • A software interface screenshot displays a messaging app workspace with a 'Create rule' modal overlaid on the right.
  • A software interface screenshot displays a purple sidebar navigation menu integrated with a Workday application feed.
  • A software interface graphic features a code snippet under the header 'Sending a message with Bolt for JavaScript.' The code shows an asynchronous function…
  • A digital graphic showcasing a centralized search interface for business applications against a pale blue background.
  • A floating white 'AI answer' pop-up card overlays a dark purple software interface showing a search results sidebar.
  • A digital UI graphic of a chat window on a clean, rounded white card.
  • This UI screenshot shows an AI-powered search result in a dark purple workspace sidebar and light main interface.
  • A close-up UI graphic shows a mobile app interface for account management, specifically the "Opportunity details" for "Acme, Inc." with 138 members.

Download Slack’s Brand Skill

A Brand Skill is a folder of brand guidance written for agents. Give it to Claude, ChatGPT, Cursor or another agent and ask it to follow Slack’s guidelines. It starts at SKILL.md, which points to the right file for each task.

It has the guidance, 145 images and the logos. The font files belong to Slack Technologies, LLC, so they’re left out.

Download the Brand SkillZIP, 5.4 MB

slack-brand-skill/

├ SKILL.md

├ README.md

├ references/

│ ├ colors.md

│ ├ logo.md

│ ├ typography.md

│ ├ brand-imagery.md

│ ├ dos-and-donts.md

│ ├ product-experience-imagery.md

│ └ voice.md

└ assets/

├ images/

└ logos/

Rainbrand’s Brand Agent built this Brand Skill from slack.com on 30 Oct 2026. It isn’t Slack’s official guide. Reviewed by Siddharth Borderwala, Founding Engineer at Rainbrand.

Slack and its logos are trademarks of Slack Technologies, LLC. Rainbrand isn’t affiliated with or endorsed by Slack Technologies, LLC.

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