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The design requirements for typeface, text and graphics are dependent on the specific needs of individual readers.

legible & readable

Distinguishability and aperture size of the characters are of particular importance for legibility.

Characters

The readability of a text is also affected by its typography and layout.

Text

Text placed on colour-gradient and cluttered backgrounds can be difficult or impossible for visually impaired people to read.

Contrast and colour

There are a number of special factors to be taken into account in designing web applications.

Digital media

legibility.info provides information on communication design for people with and without visual impairments. The design requirements for typeface, text and graphics are dependent on the specific needs of individual readers.
The site brings together the latest thinking on inclusive communication design in eight interactive sections based on the latest scientific research, German standard DIN 1450, Lettering – Legibility and a comprehensive evaluation carried out by specialists at the German Federation of the Blind and Partially Sighted (DBSV).
It provides both background information and a list of sources for further exploration. For quick reference, you will find a summary of the recommendations in our Yellow Pages at the end of each section.

Human perception is complex and technology ever-changing; existing sources are many and varied and there are numerous questions still to be answered. For this reason, the recommendations given here simply set out to reflect the current state of play. Further information will be added as new findings emerge, but it is vital that each design is checked on an individual basis.

Your comments and suggestions are welcome.

Contact: redaktion@leserlich.info


What’s new on the website

1 September 2024

  • All content now also available in English
  • New display for »Text types«
  • Contrast calculator now with colour picker tool and option to switch between text and background colour
  • Font size calculator now also with information on display text
  • Information on luminance contrasts concretised
  • New »Text in videos« section added
  • Values for character spacing adjusted according to correction in DIN 1450
  • Linked footnotes according to web standard (WCAG-compliant)
  • New design for homepage and introductory chapter
  • Some illustrations and micro-animations revised and added

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