Week 4 - Colour Flashcards
What is hue?
The base colour.
Hue is one of the three main attributes of colour.
What does saturation represent in colour attributes?
The amount of grey present.
Saturation refers to the intensity of a colour.
How is luminance defined?
Measures the relative degree of black or white within a colour (the brightness of a colour).
Luminance affects how a colour is perceived in terms of brightness.
What is colour psychology?
The study of the innate relationships between colour and human behaviour.
This field examines how different colours influence emotions and actions.
Which hues are perceived as soothing, calming, and reassuring?
Cool hues (purple, blue, and green).
Cool colours are often associated with tranquility.
What emotions do warm hues evoke?
Energy, passion, and danger.
Warm colours are often stimulating and attention-grabbing.
What does colour symbolism refer to?
The cultural meanings and significance associated with colour.
Different cultures may attach various meanings to the same colour.
What are complementary colours?
Colours that are directly opposite each other on the colour wheel.
They create dissonance and make objects in a display stand out.
What are analogous colours?
Colours that are directly adjacent to each other on a colour wheel.
They appear softer and smoother when used together.
What can poor use of colour in data visualisation cause?
Clutter and increased cognitive load for the audience.
Effective colour use is crucial for clear communication.
Why can a multicoloured background be distracting in data visualisation?
It can divert attention from the data presented.
Simplicity in backgrounds helps focus on the data.
How do cool colours appear compared to warm colours?
Cool colours appear more distant than warm colours.
This perception affects visual hierarchy.
What is a colour scheme?
The set of colours (hue, saturation, luminance) in data visualisation.
It is influenced by the type of data and the message intended.
What characterizes categorical colour schemes?
They use distinct colours to represent different categories of data.
Categorical schemes help differentiate between non-numeric groups.
What defines sequential colour schemes?
They use a single hue with varying saturation or luminance to represent ordered data.
These schemes indicate progression in data values.
What are diverging colour schemes?
A gradient formed by two sequential colour schemes sharing a common endpoint that represents a quantitative variable.
They highlight deviations from a central value.
What does a higher saturation value indicate?
A purer colour.
A saturation value of 0 results in a grey tone.
What luminance value results in the colour white?
A luminance of 255.
Luminance values dictate the brightness of a colour.
What issues can excessive colour in charts lead to?
Visual clutter and confusion.
Too many colours can overwhelm the viewer.
What is the effect of insufficient contrast in pie charts?
Makes it challenging to differentiate between the pie chart slices.
Contrast is crucial for clarity in visual representations.
What does inconsistency across charts affect?
The audience’s comprehension of the data presented.
Consistent colour usage aids in understanding and retention.
How can one accommodate for colour blindness in data visualisations?
By viewing data visualisations in grayscale.
This helps ensure that saturation and luminance levels are effective for all viewers.
What should projected presentations use for effective visual delivery?
Thick lines, sharp outlines, colour contrast, and relatively high saturation and luminance.
These elements enhance visibility in large formats.
What characteristics should printed presentations have?
Softer outlines with less saturated colours, lower luminance, and less contrast.
This approach is suitable for physical formats.
