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Go to the Design tab and select any theme.
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In the Variants section, select the
down arrow to choose the color, fonts, effects, and background styles. -
In the Themes section, select the down arrow and select Save Current Theme.
-
Go to the Design tab and select any theme.
-
In the Variants section, select the
down arrow to choose the color, fonts, and background styles. -
In the Themes section, select the down arrow and select Save Current Theme.
Creating a custom theme isn't currently possible in PowerPoint for the web. You can, however, create a custom theme in the PowerPoint desktop app.
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To open the desktop app, at the top of the ribbon, select Editing > Open in Desktop App.
Don't have the PowerPoint desktop app? Try or buy Microsoft 365.