3. Visual design of your website or application a. When designing your own website, we encourage you to be yourself. But please do not copy or imitate the look and feel of Slack’s products or sites. Doing so may create user confusion or imply Slack’s endorsement. b. Please do not use, display, mirror or frame (including in meta- tags or hidden text) Slack websites, or any individual element of Slack websites, or any other Slack Assets, or the layout and design of any page or form contained on a page. c. If utilizing the Slack API to support your service or application, you must avoid suggesting your service or application is produced or supported by Slack. If we believe ambiguity exists, we may request that you state clearly that your service is “not created by, affiliated with, or supported by Slack Technologies, Inc.” d. If we ask you to include such a message on your page, you must ensure that it is displayed on the initial page load and is clearly visible on either a dark or light background. Text should be a minimum of 15pt. and a minimum of 80% opacity black or white in color. 55 Slack Brand Guidelines Design Elements