Primer is a set of guidelines, principles, and patterns for designing and building UI at GitHub. It provides a shared language and standardized approach to delivering cohesive experiences.

Guides

Standards, guidelines, and tools to getting started with Primer.

Foundations

The fundamental parts of the design system that underpin all GitHub interfaces, such as color and typography.

UI patterns

Design guidelines covering common user workflows.

Components

Design and usage guidelines for individual Primer components.

Need help?

If you found a bug on this website, please open a new issue with as much detail as possible, including steps to replicate the bug, screenshots, links, and expected results.

If you need help using and designing with Primer, and you are GitHub staff, please visit the #primer Slack channel.