The HubSpot Brand Kit is a centralized settings area inside your portal that lets you define your brand's core visual identity — your logo, colors, and fonts. Once configured, these settings feed into HubSpot's AI tools, email templates, landing pages, and CMS themes, giving you a consistent starting point across everything you build.
For Generator users, the Brand Kit is especially important because Generator is designed to pull from these settings automatically when you set up your child theme.