# Accessible visual design

> The luminance difference between foreground and background colours.

Course: [Graphic design foundations](https://studybrix.com/en/courses/graphic-design/index.md)
Level: university
Prerequisites: No design software required.

## Notes

### 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.

## Practice questions

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

A. Text alternative
B. Legibility
C. Colour contrast
D. Readability

Answer: Colour contrast

Explanation: 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.

A. Readability
B. Text alternative
C. Colour contrast
D. Legibility

Answer: Text alternative

Explanation: 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.

A. Readability
B. Colour contrast
C. Legibility
D. Text alternative

Answer: Legibility

Explanation: The scenario directly calls for Legibility.

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

Answer: Readability

Explanation: The intended concept is Readability.

### 5. Which statement about Colour contrast is most accurate?

A. A textual equivalent describing the purpose of meaningful non-text content.
B. How easily individual characters can be distinguished.
C. The luminance difference between foreground and background colours.
D. How comfortably longer text can be read and understood in context.

Answer: The luminance difference between foreground and background colours.

Explanation: The definition in the lesson notes gives the required condition.

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

Sample answer / 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.

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

Explanation: 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 / marking guidance: Readability matters because How comfortably longer text can be read and understood in context.

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

## Further reading

- https://www.w3.org/WAI/

Original AI-assisted educational draft; not independently teacher-reviewed. References support further study, not copied exercises, affiliation or curriculum accreditation.