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How Do I Change the Group Color in Outlook?

Published in Outlook Category Color 3 mins read

In Outlook, you can change the color used for Categories, which are often used to visually group and organize various items like emails, calendar events, contacts, and tasks. Changing the color associated with a category is a straightforward process.

Here's how to change the color of an Outlook category, which is likely what you mean by "group color":

Steps to Change an Outlook Category Color

Follow these simple steps to update the color for any of your existing categories:

  1. Access Categories: Click on the down triangle next to “Categories” in the ribbon. This option is typically found in the Home tab when viewing your Inbox, Calendar, or other item lists.
  2. Select All Categories: From the drop-down menu that appears, select “All categories…”. This opens the Color Categories dialog box.
  3. Choose Category: In the Color Categories window, select the category you wish to edit from the list.
  4. Pick New Color: Choose a new color from the “Color” drop-down menu on the right of the window. Outlook offers a standard palette of colors.
  5. Repeat (Optional): Repeat steps 3 and 4 as desired to change other categories.
  6. Save Changes: Click the “Ok” button to save your changes.


Once you've changed the color of a category, any item assigned that category will display the new color, effectively changing its visual "group" color.

Why Use Categories in Outlook?

Outlook categories are a powerful tool for organization. By assigning categories to your items, you can:

  • Visualize Importance: Use colors to quickly identify high-priority emails or urgent appointments.
  • Filter & Sort: Easily filter or sort your views to see only items belonging to a specific category.
  • Group Related Items: Group related items across different Outlook modules (e.g., link an email, a contact, and a calendar event related to the same project using one category).

While Outlook has features like Contact Groups or Microsoft 365 Groups, the concept of changing a color directly associated with the group itself in the same way as categories isn't standard. Categories are the primary method for color-coding items for visual grouping within Outlook.


Action Detail
Feature Outlook Categories
Purpose Visual grouping and organization
Applies To Emails, Calendar, Contacts, Tasks, Notes
Color Customization Yes, easily changed via Categories menu


By utilizing categories and their customizable colors, you can significantly enhance your ability to quickly scan and understand your Outlook items.

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