About Slack
Slack is a cloud-based business communication platform founded by Stewart Butterfield, Eric Costello, Cal Henderson, and Serguei Mourachov in 2013. It originated as an internal tool built during the development of a failed video game called Glitch. Headquartered in San Francisco, Slack was acquired by Salesforce in 2021 for $27.7 billion. The platform organizes conversations into channels and supports direct messaging, file sharing, and integrations with thousands of third-party apps, serving millions of daily active users in organizations worldwide.
The Slack Logo
Slack's original logo was a hashtag-like symbol made of four colored bars at different angles with 11 different colors, which was notoriously difficult to reproduce consistently. In 2019, Slack redesigned its logo to a simpler, more geometric version — a pinwheel shape made of four speech bubbles and four dots in aubergine, blue, green, yellow, and red. The redesign reduced the color palette from 11 to 4 primary colors and was much easier to use across different backgrounds and sizes.
Quick Facts
Slack stands for "Searchable Log of All Conversation and Knowledge"
Slack grew from 0 to 8,000 users on its first day of public availability
The platform was born from the failure of a video game called Glitch
Slack was the fastest business app to reach $100 million in annual recurring revenue
What Does Slack Do?
Slack operates in the technology and software industry and is accessible at slack.com. The company is recognized as workplace messaging, owned by Salesforce. Slack's brand identity is built around its distinctive logo — colorful hashtag-like shapes — which has become widely recognized across the technology sector.
As part of the broader technology landscape, Slack competes alongside other well-known brands in the space. The company's logo serves as its primary visual identifier and is designed to work effectively across all digital and physical touchpoints — from mobile app icons and website favicons to marketing materials and product packaging.
Frequently Asked Questions
What does the Slack logo look like?
The Slack logo is described as colorful hashtag-like shapes. It is a symbol-only logo that does not include the company name text, making it a strong standalone visual mark.
What category does Slack belong to?
Slack is categorized under Technology in our logo quiz. The technology and software sector includes many well-known brands with distinctive visual identities.
What is the Slack website?
The official Slack website is slack.com.
Can I test my knowledge of the Slack logo?
Yes! Slack is one of 271 logos featured in our Logo Quiz. You can also try Practice Mode to learn at your own pace with no timer.
Can you identify the Slack logo?
Test your knowledge with our Logo Quiz featuring 271 company logos!
