KERN is an open, modular UX standard and design system for the German public administration. It aims to make digital government services accessible, consistent and recognisable, so that the state remains identifiable as the sender of digital offerings and citizens can use them intuitively.
Germany’s federalism fragments digital administration: online services, platforms and specialist procedures are built by different operators on different platforms, producing design breaks, weak state recognisability and inconsistent quality, including accessibility barriers. KERN addresses this with a holistic design system that supplies platform-independent implementations, from plain HTML and CSS and Web Components to adapters for frameworks such as Angular and Vue, developed as open source on OpenCode following the principle “Public Money? Public Code!”.
KERN is the design-system pillar of the Digitale Dachmarke, an attempt run by the Federal Ministry for Digital and State Modernisation (BMDS) to unify the identity of digital state services, from the federal government down to municipalities, through four trust anchors:
- a header,
- the
.gov.dedomain name, - iconography (a modern federal eagle), and
- the KERN Design System.
The Dachmarke’s concept was decided by the IT Planning Council in March 2024 and has been in pilot with first “go-lives” since December 2024, with services such as bafoeg-digital.de or wohnsitzanmeldung.gov.de carrying its elements.
KERN supplies all components in the Dachmarke theme, so administrations implement the recognised identity without additional effort.
The model has proven predecessors in other European countries. The GOV.UK Design System, maintained by the Government Digital Service, and the Government Design Principles have underpinned user-centred, accessible and consistent digital services across UK government for over a decade. Their sustained adoption demonstrates that a shared, open design system can raise service quality and public trust at scale.
Classification as Promising#
KERN is an honest, well-founded attempt to fix a documented problem. It draws on proven best practices from other European nations, is open source, designed for accessibility from the outset and has solid institutional backing through the Dachmarke.
Whether it succeeds, however, depends on uptake across Germany’s highly federated administration, where Bund, states and municipalities build services independently. The Dachmarke has been in pilot only since December 2024, and the evidence of sustained, nationwide adoption is not yet there. That is what makes the rating promising rather than a Best Practice.