To change your current theme in Outlook or Access, you can either switch to a different one or create a new theme altogether.

In Outlook, the black color theme includes dark mode, which provides a black background (instead of white) for the message window. You can switch to a white background for the message window if …

Use different themes and backgrounds to change the look and feel of Microsoft 365.

Learn how to change the background of your Outlook email messages and how to apply stationery or a theme for a consistent look.

Apply the latest Office Theme (font and colors) to your Microsoft 365 applications.

It's easy to change your calendar settings in Outlook.com, Outlook on the web, and new Outlook so your calendar looks and behaves the way you want it to.

Dark mode changes the default bright background color in Outlook.com and Outlook on the web to a darker color, which is easier on the eyes in low-light environments or if you prefer less bright interfaces.

Want to personalize your Outlook experience? With Copilot themes, you can customize the look and feel of the app to match your preferences, from colors to style.

You can quickly change the appearance of the message list and reading pane in Outlook so it looks and behaves the way you want.

If you select Use system setting, your Office theme will match your Windows theme. Note that if you had been in Colorful prior to receiving the new look, or if you'd chosen a theme other than White in Office …