How to change themes

In ProtonMail, you can change your theme from the default style (called Proton) to multiple other color schemes to suit your preferences. The Theme feature is available to all ProtonMail users, including those with a free account.

How to change themes in ProtonMail

Themes allow you to change the color scheme of your inbox in the web app.  ProtonMail currently offers six themes to choose from:

  • Proton
  • Carbon
  • Snow
  • Monokai
  • Contrast
  • Legacy

To change themes, log in to and go Settings > Appearance and select the theme you want.

ProtonMail legacy theme

The latest update to ProtonMail also included an updated color scheme and style. To restore the previous style to your inbox, select the Legacy theme.

How to enable dark mode in ProtonMail

ProtonMail’s “dark mode” option is called Carbon. We also have a higher-contrast dark mode called Monokai so you can choose the theme that suits your needs.

To enable dark mode:

1. Log in to your Proton account at and go to Settings > Appearance.

2. Scroll down to Themes and select Carbon or Monokai. Your theme will update automatically.

Custom themes

In the past, ProtonMail has supported the creation of custom themes using your own CSS theme templates. The current version of ProtonMail does not support this feature, although we plan to reinstate it in the future.