Theme and Fluent icon updates in Teams on the web

We are updating the default and dark theme colors in Teams on the web and will also update Fluent icons to align other Microsoft 365 applications.

Key points

  • Microsoft 365 Roadmap ID 68721
  • Timing:
    • Public Preview: late November (previously mid-November)
    • Standard release: mid-January (previously early December)
    • Government cloud: mid-February (previously mid-January)
  • Roll-out: tenant level
  • Action: review and assess


How this will affect your organization



When your users access Teams on the web, the default and dark themes will be updated as well as the icons for all themes.

Microsoft uses the Fluent design system to ensure a cohesive and accessible design for all Microsoft products and users. Most changes are subtle, such as:

  • Added drop shadows between panels
  • Rounded corners for square graphical elements (like buttons)
  • Color adjustments to the default and dark themes

Current design
Current design
Updated design
Updated design


What you need to do to prepare


You might want to notify your users about this change.