Week 4 Flashcards
What is colour?
Colour is the property of an object that results from how the object reflects or emits light.
What is hue?
Hue is the base of colour.
What are the primary hues in the RGB colour model?
- Red
- Green
- Blue
What are secondary colours?
Combinations of primary colours create secondary and tertiary colours.
What does saturation represent in colour?
Saturation is the attribute of a colour representing the amount of grey present.
What is a pure hue?
A pure hue has no greyness and is 100% saturated.
What does luminance measure?
Luminance measures the relative degree of black and white within a colour (brightness).
How does adding white or black affect a hue?
Adding white creates a brighter colour and adding black creates a darker colour.
What is colour psychology?
Colour psychology is the study of the innate relationship between colour and human behaviour.
Which hues are perceived as soothing and calm?
- Purple
- Blue
- Green
Which hues evoke energy and passion?
- Yellow
- Orange
- Red
What is colour symbolism?
Colour symbolism refers to the cultural meaning and significance associated with colour.
True or False: Colour symbolism is consistent across all cultures.
False
How does perceived colour change?
Perceived colour changes as contrast with the background changes.
What are complementary colours?
Complementary colours are directly opposite each other on the colour wheel.
What is the effect of using complementary colours?
Creates dissonance and makes objects in a display stand out.
What are analogous colours?
Analogous colours are directly adjacent to each other on the colour wheel.
What is the cognitive effect of overusing complementary and analogous colours?
Increases cognitive load and may distract the audience.
What is a colour scheme in data visualisation?
The colour scheme is the set of colours (hues, saturation, and luminance) in data visualisation.
What does a categorical colour scheme represent?
Distinct and unordered colour groups represent a categorical variable outcome.
What is a sequential colour scheme ?
A gradient of saturation or luminance of a hue represents the outcomes of an ordered variable.
What is a diverging colour scheme?
A gradient formed by two sequential colour schemes sharing a common endpoint represents a quantitative variable.
What does HSL stand for?
Hue, Saturation, Luminance
What happens when SAT value is 0?
Results in a grey tone.
