5. Understandable

Maintain the interface so that it remains intuitive and predictable, enabling all users to navigate digital content more effectively.

This principle emphasises the need for clear language and consistent design.

Example: Consistent navigation

Maintaining consistent navigation in digital content helps users understand how to use the application and what to expect as they interact with different parts of the website or application.

For example, a digital banking application may have a specific interface on the home screen for navigating between accounts. This structure should remain consistent across both mobile and desktop versions. Consistency in interface design helps users with cognitive disabilities understand the functionality more quickly and reduces confusion for all users.

Example of poor design – components serve the same purpose but are not labelled consistently.

Figure 31. Example of poor design – components serve the same purpose but are not labelled consistently.

(Source)

Example of good design – components serve the same purpose and are labelled consistently.

Figure 32. Example of good design – components serve the same purpose and are labelled consistently.

(Source)

 

Accessibility

Background Colour Background Colour

Font Face Font Face

Font Size Font Size

1

Text Colour Text Colour

Font Kerning Font Kerning

Image Visibility Image Visibility

Letter Spacing Letter Spacing

0

Line Height Line Height

1.2

Link Highlight Link Highlight