Accessibility Statement

Compliance Status

We are continuously working to improve the accessibility of our website. The limitations listed below are known to us, and we are committed to addressing them step by step.

Non-accessible Content

Interactive Canvas Elements

The light refraction simulator on the "Collection & Research" page is based on the HTML Canvas element. This interactive graphic cannot be fully accessed by screen readers. Navigation using keyboard alone or assistive technologies is limited. Descriptive alternative text explains the physical principle illustrated. A fully accessible alternative is planned.

• Affected: "Collection & Research" page (sammlung.html), section "Light Refraction Simulator"
• Requirement: WCAG 2.1 Success Criterion 1.1.1 (Non-text Content), 2.1.1 (Keyboard)
• Planned remedy: Full textual description of the educational content as an alternative

Interactive Timeline (Zeitkurbel)

The interactive timeline on kurbel.html contains an animated timeline. Parts of this feature are keyboard-navigable, but not fully optimised for all assistive technologies.

• Affected: "Zeitkurbel" page (kurbel.html)
• Requirement: WCAG 2.1 Success Criterion 1.3.1 (Info and Relationships), 2.1.1 (Keyboard)

Image Galleries and Photography

Some historical photographs in the gallery have only short, generic alternative texts. Detailed descriptive texts are being added progressively.

• Affected: Image galleries on ausstellung.html, sammlung.html, dauerausstellung.html
• Requirement: WCAG 2.1 Success Criterion 1.1.1 (Non-text Content)

Colour Contrast of Decorative Elements

Certain design elements — in particular subtle labels and metadata in the dark lab environment of the cobbler's sphere section — do not consistently meet the 4.5:1 contrast ratio required by WCAG AA. These are purely decorative and do not convey any essential information.

• Affected: "Object in Focus" section on sammlung.html
• Requirement: WCAG 2.1 Success Criterion 1.4.3 (Contrast, Minimum)

Technical Information

This website is a static HTML/CSS/JavaScript site without a content management system. Content is managed editorially and updated regularly.

What is Accessible

• All pages include a visible skip link ("Skip to main content")
• All images with informational content have descriptive alternative texts
• Navigation and form elements have ARIA labels
• Page structure uses semantic HTML elements (header, main, nav, footer)
• Main navigation is reachable by keyboard
• Dynamic content (quiz feedback, simulator status) uses aria-live regions
• All pages are correctly marked up in German or English (lang attribute)
• Zooming to 200% does not significantly impair readability
• Colour contrast of main content meets WCAG AA requirements

Feedback and Contact

Enforcement Procedure