Meta open-sources Astryx, a React design system with 150+ components and seven themes

Meta has released Astryx, an open-source design system built on React and StyleX that includes over 150 accessible components, seven themes, dark mode, templates, and a CLI tool. The system evolved over eight years inside Meta and is now available in Beta. Astryx separates component behavior and accessibility from visual theming, allowing customization at the token level without component rewrites.