An effective administrative interface is table stakes for any content management system that wishes to make a mark with users. Claro is a new administration theme now available in Drupal 8 core thanks to the Admin UI Modernization initiative. Intended to serve as a logical next step for Drupal's administration interface and the Seven theme, Claro was developed with a keen eye for modern design patterns, accessibility best practices, and careful analysis of usability studies and surveys conducted in the Drupal community.