Go to Appearance>Customize to set up the theme color and typography.
Colors
Appearance> Customize> Colors>Global colors settings allow to customize Site Background, Primary and Text color, and other related options.
Appearance> Customize> Colors>Text Selection settings allow to customize the text color on highlighting.
Typography
Appearance> Customize> Typography>General Fonts allows you to customize the primary and secondary font family, size, line height, etc.
Appearance> Customize> Typography>Heading Options allows you to customize the font family, size, line height for all types of headings.
Appearance> Customize> Typography>Blockquote Options allows you to customize the font family, size, line height, Letter Spacing for the Blockquote blocks.
Appearance> Customize> Typography>Button Options settings customize fonts for the button.
Appearance> Customize> Typography>Input Options settings configure options related to fonts for input text.