Set up your brand kit: logos, favicon, colors, fonts and theme

Short answer

Marketing > Brand opens Brand Identity with Brand kit, Brand voice and Brand knowledge tabs. The brand kit holds logos, favicons, colors, fonts and a brand theme for pages and blogs. HubSpot's KB advises choosing a fallback font with a similar x-height and weight to your custom font. With the Brands add-on, pick the brand from the dropdown first.