GitHub Primer vs react-md

GitHub Primer is a free, open-source design system for designing and building GitHub interfaces. Its guidance covers product UI components, patterns, and design tokens for color, spacing, and typography. Primer Brand addresses marketing websites and other digital experiences. React documentation explains theming, recommended practices, and component extension. Primer also provides accessibility guidance and tools, along with Octicons, GitHub’s scalable icon set. Product UI documentation includes an MCP server page. Component status is identified as experimental, ready, or deprecated; ready components are described as mature with long-term support expected. Primer Web and Primer Primitives are available through the Primer Figma Community page, while GitHub’s Figma organization is limited to GitHub team members. The Primer Mobile Figma library is internal only. GitHub employees alone can contribute to Primer Web because of Figma’s open-source file handling. GitHub’s Design Infrastructure and Design Engineering teams maintain the CSS framework, documentation, tools, libraries, and component libraries.

react-md is a free React component library for web interfaces, styled with Sass and SCSS. It provides more than 100 components, over 60 hooks, and 40 utilities, including building blocks for fixed headers, navigation panels, and main content areas. Styles follow Material Design and can be configured during compilation with Sass variables or at runtime with Sass functions and mixins. Customized colors are automatically updated to meet a minimum contrast ratio. More complex widgets follow W3C ARIA authoring practices for screen-reader access and keyboard movement. The default theme uses #2196f3 and #ff9100 as primary and secondary colors, with Roboto as the default font. Icons can come from custom icons, SVG components in @react-md/material-icons, or Material Symbols. Installation requires React and ReactDOM v19 or above, plus @react-md/core and sass. Documentation covers npm, pnpm, yarn, and font setup through Fontsource, Google Fonts CDN, or Next.js.