The Site Identity menu in the customizer lets you set the logo, site title, tagline, and favicon.
Logo
To use an image for your logo, click the Select logo button to upload or choose an image from the media library.
Site Title
If you would like to use text for the logo, use the Site Title input box.
Tagline
The tagline text for the Ariyah theme is shown in the large Hero image area over the background image.
Hiding Text
If you want to hide the text, just uncheck the “Display Site Title and Tagline.”
Site Icon
Also known as favicons, site icons are what you see in browser tabs, bookmark bars, and within the WordPress mobile apps. Site Icons should be square and at least 512 × 512 pixels.