Lecture 10: Colour Design

Question 1

What are the three dimensions / components of colour?

Answer 1

1. Hue
2. Saturation
3. Value

Question 2

What is Hue?

Answer 2

Hue is regarding the dominant wavelength as in is the colour more dominantly RED, GREEN or BLUE or if hardly any colour closer to a white light.

Question 3

What is Saturation?

Answer 3

The intensity, chroma and vividness of colour.

Question 4

What is Desaturation?

Answer 4

Desaturation is when the hue becomes less dominant as you move to the centre of the circle.

Question 5

What is Value?

Answer 5

Value is the strength of the colour, the lightness and darkness of the specific colour.

Question 6

What are the FOUR guidelines when it comes to using colour?

Answer 6

• Limit the hue and number of colours used between 2 to 3 colours only.
• Use saturation to create different colours: analogous, complimentary and split-complimentary.
• Consider colour blindness
• Consider age

Question 7

What is protanopia and deuteranopia?

Answer 7

Red-Green colour blindness

Question 8

What is tritanopia?

Answer 8

Blue-yellow colour blindess.

Question 9

What is legibility?

Answer 9

Legibility is the minimum requirement of any visual element. It is determined by difference in Value between symbol and background.
The difference in value is known as the luminance contrast, the higher the luminance contrast the easier it is to see the edges between shapes.

Question 10

What is chromatic aberration?

Answer 10

Chromatic aberration is the idea that different wavelengths focus differently and that highly separated wavelengths cannot be focused simultaneously.

Question 11

What is the stroop effect?

Answer 11

The stroop effect is the effect that visual perception can conflict with verbal meaning and creating interference effects.
This can cause displays to be difficult to use, can slow response time, or even lead to performance errors through misinterpretation.