![The new octothorpe can scale up or down to optimize legibility at various sizes.](https://pentagram-production.imgix.net/618d5092-a542-4dae-bd27-a3afb4bcc12d/mb_slack_02.jpg?rect=%2C%2C%2C&w=640&crop=1&fm=jpg&q=70&auto=format&fit=crop&h=427)
The new octothorpe can scale up or down to optimize legibility at various sizes.
The new brand identity.
![The designers explored a range of possibilities for the new identity.](https://pentagram-production.imgix.net/618d5092-a542-4dae-bd27-a3afb4bcc12d/mb_slack_04.jpg?rect=%2C%2C%2C&w=640&crop=1&fm=jpg&q=70&auto=format&fit=crop&h=427)
The designers explored a range of possibilities for the new identity.
![Logo explorations for the octothorpe.](https://pentagram-production.imgix.net/618d5092-a542-4dae-bd27-a3afb4bcc12d/mb_slack_05.jpg?rect=%2C%2C%2C&w=640&crop=1&fm=jpg&q=70&auto=format&fit=crop&h=427)
Logo explorations for the octothorpe.
![The shapes of the logo can be used in a variety of ways, here in a potential design for advertising.](https://pentagram-production.imgix.net/618d5092-a542-4dae-bd27-a3afb4bcc12d/mb_slack_07.jpg?rect=%2C%2C%2C&w=640&crop=1&fm=jpg&q=70&auto=format&fit=crop&h=427)
The shapes of the logo can be used in a variety of ways, here in a potential design for advertising.