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Art & music · lesson 4 of 4

Accessible visual design

The luminance difference between foreground and background colours.

University8 practice questionsNotes + worked examples
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Learn the ideas

Prerequisites: No design software required.

Colour contrast

The luminance difference between foreground and background colours.

Text alternative

A textual equivalent describing the purpose of meaningful non-text content.

Legibility

How easily individual characters can be distinguished.

Readability

How comfortably longer text can be read and understood in context.

Worked examples

Example 1

Which term best matches this description: The luminance difference between foreground and background colours.

Colour contrast is the matching concept in this lesson.

Colour contrast

Example 2

Which term best matches this description: A textual equivalent describing the purpose of meaningful non-text content.

Text alternative is the matching concept in this lesson.

Text alternative

Check your understanding

8 questions

Decimals or fractions are accepted for numeric answers. Proofs and written responses use sample answers and require human marking. This is practice, not a protected examination.

1 Which term best matches this description: The luminance difference between foreground and background colours.

Show answer and explanation

Colour contrast

Colour contrast is the matching concept in this lesson.

2 Which term best matches this description: A textual equivalent describing the purpose of meaningful non-text content.

Show answer and explanation

Text alternative

Text alternative is the matching concept in this lesson.

3 Which concept would you apply first in a situation where how easily individual characters can be distinguished.

Show answer and explanation

Legibility

The scenario directly calls for Legibility.

4 Name the concept described as: How comfortably longer text can be read and understood in context.

Show answer and explanation

Readability

The intended concept is Readability.

5 Which statement about Colour contrast is most accurate?

Show answer and explanation

The luminance difference between foreground and background colours.

The definition in the lesson notes gives the required condition.

6 Explain one important difference between Colour contrast and Text alternative.

Sample answer and marking guidance

Colour contrast: The luminance difference between foreground and background colours. Text alternative: A textual equivalent describing the purpose of meaningful non-text content.

Credit a clear distinction using both definitions and an appropriate example if supplied.

7 Give a short example showing how Legibility would be used in practice.

Sample answer and marking guidance

A valid example should demonstrate this idea: How easily individual characters can be distinguished.

Credit a relevant scenario that applies the concept rather than merely naming it.

8 Summarize why Readability matters in the lesson “Accessible visual design”.

Sample answer and marking guidance

Readability matters because How comfortably longer text can be read and understood in context.

Credit the core purpose, scope and any important limitation from the notes.

Further reading and review references

These are reference links, not copied exercises, institutional endorsement or proof of independent review.