Change Dark View in Outlook: Steps for Every Version

To change Outlook to dark view, open its appearance or theme settings and choose Dark. In classic Outlook for Windows, go to File > Office Account and set Office Theme to Black. The exact route depends on whether you use new Outlook, classic Outlook, Outlook on the web, or the Mac app. Dark view changes Outlook’s menus and surrounding interface; an email’s reading background may need a separate switch.

Use the instructions for the version you have, rather than looking for one setting that applies everywhere. If you are unsure which Windows app is open, check whether it is labeled Outlook or classic Outlook in the Start menu, or compare its Settings and File menus with the options below.

What You’ll Need

Access to the Outlook app or website and, if prompted, the Microsoft account used to open it.
A few minutes to change the setting and check the inbox and an open message. You do not need to install an add-in or change Windows or macOS settings unless you prefer Outlook to follow your device theme.

Step-by-Step

Identify your Outlook version. On Windows, new Outlook has a Settings gear and a simplified interface; classic Outlook has a File tab in the ribbon. On a Mac, open the Outlook app rather than Outlook in a browser. If you use Outlook at outlook.office.com or outlook.live.com, follow the web instructions. This matters because the theme setting is in a different place in each version.
Change the theme in new Outlook for Windows. Select the Settings gear in the upper-right corner. Choose General > Appearance, then select Dark in the theme choices. If the change is not immediate, close the Settings pane and give Outlook a moment to redraw. To have Outlook follow Windows instead, choose Use system setting if that option is available, and set Windows to dark mode under Settings > Personalization > Colors.
Change the theme in classic Outlook for Windows. Select File > Office Account. Under Office Theme, choose Black. In some builds, the same theme control is available through File > Options > General, in the section for personalizing your copy of Microsoft Office. Close the backstage view to return to your mailbox. The Black theme darkens the Outlook interface, including the ribbon and navigation areas; it does not guarantee that the body of every email will appear dark.
Change the theme in Outlook on the web. Select the Settings gear, then choose General > Appearance. Select the dark theme and close the Settings pane. If your organization has changed the available options, choose the darkest theme offered or ask your Microsoft 365 administrator whether appearance settings are restricted. The web theme applies to the Outlook page in that browser; it does not change the theme of the desktop app.
Change the theme on a Mac. In Outlook for Mac, open Outlook > Settings (called Preferences in some older releases), then open General. Under Appearance, choose Dark if the app offers a separate choice. If you see a system appearance option instead, set macOS to dark under Apple menu > System Settings > Appearance, or choose the app’s system-following option. Menu names can vary slightly by Outlook release, so update the app if the Appearance control is missing.
Set Outlook on a phone or tablet. Open Outlook, tap your profile picture or initials, and tap the Settings gear. Look for Appearance or Theme, then select Dark or System, depending on the choices shown in your version. Some mobile releases follow the device’s appearance setting rather than offering a separate dark option. In that case, switch the phone’s display appearance to dark in its system settings, then reopen Outlook.
Check an email separately. Open a message and look for a sun, moon, or background-switch control in the message toolbar. If it is available, use it to change the message reading area between light and dark. In classic Outlook, this control may appear when a message is open, not while you are looking at the inbox. Not every version or message displays the control. Check both the inbox and an open email before deciding the change has worked.

Common Mistakes

Changing Windows but expecting every Outlook version to follow. New Outlook and some Mac or mobile configurations can follow the device theme, but a manually selected Outlook theme may override it. Choose Dark inside Outlook if you want to set the app directly. Choose the system-following option only when you want Outlook to change as your device changes.

Assuming a dark interface makes all email content dark. Outlook’s menus, folder list, and message canvas are not always controlled together. A message can remain white because its sender used a white background, because the reading-area switch is off, or because that version does not invert the content. This is not necessarily a failed theme change.

Searching for the same menu in every edition. The Office Theme control belongs to classic Outlook’s Office account or options screen. New Outlook and Outlook on the web use the Settings gear and Appearance page. If a menu path does not match your screen, confirm which version you opened before changing unrelated settings.

Choosing Black when you only want a dimmer look. In classic Outlook, Black is the dark Office theme. Other Office Theme choices may be lighter, and available options vary by release and organization. Choose the intended theme rather than changing individual colors in Windows or modifying message formatting.

Tips

Use system mode for automatic changes. If you switch your computer between light and dark at different times of day, Outlook’s system-following option can keep its appearance in step. If it does not, check that Outlook is set to follow the system rather than locked to Light or Dark.
Check the reading pane and a separate message window. They may offer different controls, and the message background switch can be visible only after opening a message. This is especially useful when the folders and ribbon look dark but the email itself is still bright.
Consider readability, not just appearance. Some newsletters, signatures, and messages use custom colors that can be difficult to read against a dark background. If text becomes hard to distinguish, use the message’s background switch if available, or view that message in a light reading area.
Keep the app current. Outlook’s settings labels and theme options can change as Microsoft updates the app. Install updates through the Microsoft Store or Office update controls on Windows, or the App Store or Microsoft AutoUpdate on Mac, then check the relevant Appearance page again.

Troubleshooting

The inbox stays light after selecting Dark. Reopen the Appearance or Office Theme setting and confirm Dark or Black is still selected. In new Outlook or on the web, close the Settings pane and refresh the page if needed. In classic Outlook, return to the mailbox after choosing Black. If only some controls remain light, the app may use a separate accent or message background that the theme does not change.

Outlook changes back after restarting. Check whether the selected option is Use system setting or its equivalent. If so, the device’s current light or dark setting determines Outlook’s appearance. Select Dark directly in Outlook to keep it dark regardless of the device setting. On a work or school account, an administrator’s policy may limit the choices; contact your help desk if the option is unavailable or will not stick.

The message body remains white. Open the message and look for the background-switch icon. If you cannot find it, the current Outlook version may not provide a separate message canvas control in that view. Some HTML emails also specify their own colors, so Outlook may preserve a light background to keep the sender’s formatting readable. Try another message to determine whether the behavior affects all email or only one sender’s message.

The dark theme option is missing. Confirm you are in Outlook’s own settings, not the operating system’s display menu or another Office app. Update Outlook, then check again. If you are using an older release, a managed work account, or a simplified mobile version, the option may be named differently or controlled by the device. Use the system dark setting as a fallback where Outlook follows it.

Dark mode is uncomfortable or text is hard to read. Switch back to Light, or try the system theme if it offers a better balance. You can also keep the app interface dark and use a light background for an individual message when that control is available. Dark mode is a display preference; changing it does not alter the email’s contents or send a different version to recipients.

Frequently Asked Questions

Does Outlook have a dark mode?
Yes. New Outlook, classic Outlook, Outlook on the web, and many Mac and mobile versions offer a dark theme or can follow the device’s dark appearance. The exact setting and available choices depend on the version.

Why is Outlook dark but my email is white?
The app theme and message reading background can be separate. Open the message and look for a sun or moon background switch. Some message designs also keep their own light background for readability.

Is Black the same as Dark in Outlook?
In classic Outlook for Windows, Black is the name of the dark Office Theme. New Outlook and Outlook on the web generally label the choice Dark. The wording differs, but each changes the app’s interface appearance.

Can Outlook follow my computer’s dark mode?
Often, yes. Select Use system setting or a similar system-following choice in Outlook. If that option is not available, choose Dark in Outlook directly and change the app theme manually when you want to switch.

Will changing dark view affect other people or my messages?
No. It changes how Outlook displays on your device or in your browser. It does not edit your email, change how recipients see a message, or change the theme in another Outlook app.

Can I use dark menus with a light email background?
In some versions, yes. Keep the Outlook theme dark and use the message background control when reading an email. If your version has no separate control, the reading area may follow the app theme or the message’s own formatting.

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