rec_37

(37) The four principles of accessibility are: perceivability, meaning that information and user interface components must be presentable to users in ways they can perceive; operability, meaning that user interface components and navigation must be operable; understandability, meaning that information and the operation of the user interface must be understandable; and robustness, meaning that content must be robust enough to be interpreted reliably by a wide variety of user agents, including assistive technologies. Those principles of accessibility are translated into testable success criteria, such as those forming the basis of the European standard EN 301 549 V1.1.2 ‘Accessibility requirements suitable for public procurement of ICT products and services in Europe’ (2015-04) (European standard EN 301 549 V1.1.2 (2015-04)), via harmonised standards and a common methodology to test the conformity of content on websites and mobile applications with those principles. That European standard was adopted on the basis of mandate M/376 issued by the Commission to the European standardisation organisations. Pending publication of the references to harmonised standards, or of parts thereof, in the Official Journal of the European Union, the relevant clauses of European standard EN 301 549 V1.1.2 (2015-04) should be considered as the minimum means of putting those principles into practice.

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Source: EUR-Lex (Cellar) · retrieved 2026-11-03 · Text as adopted (Official Journal); later amendments are not incorporated in this text.