Carbon Design System vs react-md

Carbon Design System is IBM’s open-source design system for digital products, shaped by the IBM Design Language. Carbon Core provides foundations, components, patterns, code, and guidance for teams building consistent digital experiences. Carbon for Products adds product-oriented components, styling, and guidance, with components built using React. The wider ecosystem includes Carbon for AI guidelines and reusable elements, Carbon Charts, and integrations such as Carbon for Cloud, Carbon for AEM, and Carbon React Native. Design kits maintained in Figma receive library updates automatically. Carbon MCP lets AI applications or agents query colors, typography, component details, and usage guidance. Web components are available as ES modules or through a CDN and can be used with frameworks such as Angular or Ember. Developer resources include GitHub repositories, Storybooks, tutorials, Carbon Devtools, a color-contrast checker, and UI Builder. The builder can export presentation images, demo apps, or frontend code. Components follow accessibility checks based on IBM’s checklist. Carbon is free to use and contribute to, with no paid tiers stated. Its patterns cannot include code for every possible implementation.

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.