Customize the Microsoft 365 theme for your organization

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As the admin of your organization, you can create multiple themes for the people in your system, and select which themes apply to different members of your arrangement. The system theme is what appears in the top navigation bar for people in your organization.

Y'all tin can add or update a default theme that applies to everyone within your org. You tin besides create upwardly to iv additional grouping themes that can be assigned to multiple Microsoft 365 groups.

Add together or update your organization's theme

  1. In the admin middle, become to the Settings > Org Settings page, and then choose the Organization profile tab.

  2. On the Organization profile tab, select Custom themes.

All organization themes can be customized using the following tabs.

Tab What tin can y'all exercise?
General Alter a theme name and assign to up to five groups (if applicable).
Logos Add your arrangement logo, including alternate logo for dark theme.
Colors Customize a color scheme by specifying navigation bar, accent, text and icon colors.

General: Modify a theme

Your experience on the General tab depends on whether you're adding or modifying the default theme or a grouping theme.

Update the default theme

The default theme is the kickoff theme displayed.

  1. If you previously customized a theme for your organization, select Default Theme and utilize one of your saved customizations, or, select Add together theme.
  2. On the General folio, you can prevent users from overriding their theme and bear witness the user's display name.
  3. Select Relieve to salve your changes.

Important

The default theme is unique, information technology can't be renamed and applies to anybody inside your organization. To delete the default theme, you lot have to delete all other themes outset.

Screenshot: General tab showing the default theme for your organization

Create a group theme

You can create up to iv additional group themes.

  1. On the Full general page, enter a name for your new theme.

  2. Under Groups, you tin select up to 5 Microsoft 365 Groups that tin see your group theme, instead of using the default theme. You can also prevent users from overriding their theme and show the user's display name.

  3. Select Save.

Screenshot: General tab showing the default theme for a group of users in your organization

Logos: Specify your theme logos

On the Logos page, you can add together your logos, and specify the URL where users will navigate to when they select the logo.

  • Default logo: Add a URL location that points to your logo. Brand sure that the URL uses HTTPS. Add a HTTPS image url that allows anonymous access and doesn't require authentication. For default theme, you also have an option to upload a logo image that is less than 10kb. Your default logo can be in the JPG, PNG, GIF, or SVG format. For SVG images, they will be resized to fit 24 pixels vertically. JPG, PNG, GIF images volition be scaled to fit 200 x 48 pixels. Logo aspect ratio will always be preserved.
  • Alternate logo: Add together a URL location that points to your logo. Your alternate logo should be optimized for utilise in Office dark themes. Same requirements every bit the default logo.
  • On-click link: Add a URL location that points to your logo. You tin can utilize your logo every bit a link to whatever visitor resources, for example, your company'due south website. If you don't select a URL location for your logo, information technology'll default to the Office habitation page.

Select Save to save your changes.

Screenshot: Logos tab showing the logo options

Y'all can remove your logos at any time. Merely return to the Logos page and select Remove.

Colors: Choose theme colors

On the Colors folio, yous can set the default colors and choose which logo should be used.

  • Navigation bar color: Select a color to use for the background of the navigation bar. The navigation bar appears at the top on every page.
  • Text and icon color: Select a color to employ for the text and icons on the top navigation bar.
  • Accent colour: Selection one that shows up well on a white or light background. The accent colour is used to color some links and buttons that show upwardly on a white or light background. For example, the emphasis color is used to color elements in a user'southward inbox and on their Office.com portal page.
  • Reset color: Select this link to reset colors to the default colors.

Screenshot: Colors tab showing default theme colors for your organization

Oft asked questions

My system already has a theme for all employees. How will this change?

The default theme will continue to be shown to all employees. Adding a new group theme volition only exist made available to the Microsoft 365 groups associated with that theme.

Why don't I see group themes in the Admin Heart?

Simply global admins can customize company themes. Global readers have read-just access.

How many dissimilar themes can I gear up for my organization?

Upwardly to five themes can be created. A default theme and four group themes.

Can I use security groups or distribution groups instead of Microsoft 365 Groups?

No, new grouping themes must be mapped to one or more Microsoft 365 groups and non security groups or distribution groups.

Can I manually assign a theme independent of Microsoft 365 Groups?

No, new group themes must be mapped to ane or more than Microsoft 365 groups. Users who are members of the Microsoft 365 group will get the theme applied to their grouping. You can create and add new members to a Microsoft 365 Group by going to the Settings > Groups in the admin center.

What happens if a user is assigned to multiple group themes?

Users who are assigned to multiple group themes will be shown the default theme.

Why can't I delete the default theme?

The default theme can only be deleted once all group themes are deleted. Make sure yous delete all grouping themes earlier you lot effort to delete the group theme.

Why am I receiving an error message every time I upload a logo URL.

Make sure the logo you lot're using is specified as a publicly addressable URL. Follow these steps for uploading logos to Azure Hulk Storage or the Role 365 Content Delivery Network with SharePoint Online.

Why am I receiving the message "Doesn't meet minimum color dissimilarity ratio of 4.5:ane"?

The recommended dissimilarity ratio between text, icon or button colour and background color is 4.five:i. You can override this recommendation and however salve your theme as this is not a requirement.

If I define a theme, which places in Microsoft 365 will this be used?

Any theme appears in the height navigation bar for everyone in the organization equally function of the Microsoft 365 suite header.

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