Notion can have 2 background colors: white or black.

Making background black with dark mode

You can enable dark mode by going to your Notion settings and

Untitled

Enabling Notion dark mode

Using any background color

You can also use a Notion to website service like Notaku to create a completely customizable website from Notion.

Related articles

How to change Notion to dark mode

How to change font in Notion

How to add a custom domain to Notion