Typography settings control the fonts and colors of the theme. They are at AppearanceCustomizeTheme SettingsTypography. Each font list has a Standard Fonts group and a Google Fonts group. A font from the Google Fonts group loads from Google servers. To host fonts yourself, see Load Fonts Locally Instead of Google Fonts.

Settings marked Premium need Polestar Premium.
Site Title Font
Sets the font of the site title in the header. The default is Montserrat.
Site Tagline Font
Sets the font of the tagline in the header. The default is Montserrat.
Heading Font
Sets the font for h1 to h6 headings, including page and post titles, and for main menu links. Without Polestar Premium it also sets the font of the site title and tagline. The default is Montserrat.
Body Font
Sets the font for body text. The default is Open Sans.
Site Title Color
Sets the color of the site title. The default is #2d2d2d.
Site Tagline Color
Sets the color of the tagline. The default is #626262.
Accent Color
Sets the color of content links, button backgrounds, the current pagination number, tag link hovers and the blockquote border. It also colors the menu button. The default is #4d8ffb.
Heading Color
Sets the color of h1 to h6 headings, including page and post titles, and of main menu links, form labels and table headers. Without Polestar Premium it also colors the site title. The default is #2d2d2d.
Text Color
Sets the color of body text. The default is #626262.
Secondary Text Color
Sets the color of post meta and other supporting text. The default is #828282.
Border Color
Sets the color of borders between posts and around tables, form fields and comments. The default is #e6e6e6.
Element Background Color
Sets the background of inverted buttons, pagination buttons, tag links and WooCommerce table headers. The default is #f1f1f1.