Lesson 4.1: Colour Theory and the Colour Wheel

Introduction

In this lesson, students will embark on an exploration of Colour Theory and the Colour Wheel, fundamental aspects of understanding colour in visual practice. Colour is one of the most powerful tools an artist or designer can wield. However, it can also be one of the most misused. By understanding how colours interact, students will be equipped to make informed choices about colour in their work. The objectives of this lesson include mastering the classification of colours into primary, secondary, and tertiary categories, understanding the structure of the colour wheel, and exploring the concepts of hue, value, and saturation.

Objectives

Learn about primary, secondary, and tertiary colours and the structure of the colour wheel.
Understand hue, value, and saturation, and gain the vocabulary to describe colour precisely.
Discover techniques for mixing colour from a limited palette and controlling muddiness.
Build a personal colour-mixing reference.
Accurately describe colour using the concepts of hue, value, and saturation.

H2: Understanding the Colour Wheel

The colour wheel is a circular diagram that represents the relationships between different colours. Developed by Isaac Newton, the colour wheel provides a visual representation that helps artists and designers navigate the world of colour.

Primary Colours

The foundation of the colour wheel consists of primary colours. These colours are unique because they cannot be created by mixing other colours. The primary colours are:

Red
Blue
Yellow

Example: Primary Colour Mixing

To understand the significance of primary colours, let's look at a simple mixing example. If you take equal parts of blue and yellow, how do you create green?

Mixing Blue and Yellow:
0% Red
100% Blue
100% Yellow
The result is green, which is a secondary colour. This demonstrates that primary colours can be combined to yield a broader palette.

Secondary Colours

Secondary colours are created by mixing two primary colours. The secondary colours are:

Green (Blue + Yellow)
Orange (Red + Yellow)
Purple (Red + Blue)

Example: Creating Secondary Colours

Each combination can be illustrated visually on the colour wheel. For instance, if you mix red and yellow, the result is orange.

Creating Orange:
100% Red
100% Yellow
Results in 100% Orange.

Tertiary Colours

Tertiary colours are formed by mixing a primary colour with a secondary colour. They are typically named by combining the names of the two colours. Examples of tertiary colours include:

Red-Orange
Yellow-Orange
Yellow-Green
Blue-Green
Blue-Purple
Red-Purple

Example: Forming Tertiary Colours

Consider mixing yellow and green to create yellow-green.

Mixing Yellow and Green:
100% Yellow
100% Green
The result is yellow-green.

H2: Hue, Value, and Saturation

To accurately describe colour, it is essential to understand three fundamental attributes: hue, value, and saturation.

Hue

Hue refers to the name of a colour, which defines its position on the colour wheel. Common examples include red, blue, and yellow. Hue is the most recognizable part of colour that allows for differentiation.

Value

Value refers to the lightness or darkness of a colour, which is influenced by the amount of light reflected. The value scale consists of tints (adding white) and shades (adding black). For example:

A tint of red could be pink (light red).
A shade of red could be burgundy (dark red).

Saturation

Saturation refers to the intensity or purity of a colour. High saturation means the colour is vivid, while low saturation refers to duller colours. Understanding saturation helps artists communicate mood and emotion in their work.

Example: Exploring Colour Attributes

Let us explore red as an example colour:

Hue: Red
Value:
Tint (Pink): 75% Red + 25% White
Shade (Burgundy): 75% Red + 25% Black
Saturation: A vibrant red may have a saturation of 100%, while a greyish red may have a saturation of 25%.

H2: Mixing Colour from a Limited Palette

One of the practical applications of colour theory is learning how to mix colours effectively and efficiently. Working with a limited palette can simplify the colour-mixing process and help control muddiness.

Limiting Your Palette

Choosing three primary colours can serve as a foundation for creating a wide range of colours. This method also encourages creativity. For instance, using:

Red
Yellow
Blue

By mixing these three colours, many secondary and tertiary colours can emerge.

Example: Mixing with Limited Palette

When mixing with red, yellow, and blue:

Mixing Red and Blue: yields Purple
Mixing Yellow and Blue: yields Green
Mixing Yellow and Red: yields Orange

Controlling Muddiness

When mixing colours, it is easy to create muddy or dull results. To control this, students should:

Limit the number of colours being mixed.
Mix complementary colours carefully to avoid creating greys.
Use white to alter value carefully rather than mixing multiple hues.

H2: Building a Personal Colour Mixing Reference

Creating a personal colour mixing reference will be useful for students in future projects. This involves documenting colour mixtures and their proportions.

Creating a Colour Mixing Chart

Follow these steps:

Select Your Base Colours: Choose a few primary and secondary colours.
Mix in Proportions: Experiment with varying proportions of your colours. For example:

75% Yellow + 25% Blue = Bright Green
50% Red + 50% Blue = Rich Purple

Document Results: Write down the results, include a small swatch of the colours, and describe the mixture.

Example: Colour Mixing Reference

Base Colour Combination	Resulting Colour	Proportions
Yellow + Blue	Bright Green	75% Yellow, 25% Blue
Red + Blue	Rich Purple	50% Red, 50% Blue
Yellow + Red	Vibrant Orange	50% Yellow, 50% Red
Blue + Yellow (Tertiary)	Yellow-Green	50% Blue, 50% Yellow (Tertiary)

H2: Describing Colour Accurately

Using the concepts of hue, value, and saturation, students should develop a precise vocabulary for describing colours in artistic projects.

Practical Application

When discussing colours in your artwork, use the following structure:

Describe the hue: “This is a blue.”
Specify the value: “This is a light blue.”
Include the saturation: “This is a vibrant light blue.”

Example: Describing a Colour

For a color that appears in a painted landscape, students might say, “The sky is a bright, highly saturated azure blue.” This detailed description not only conveys colour but also gives an impression of the mood and atmosphere.

Conclusion

In conclusion, this lesson has provided students with an in-depth understanding of Colour Theory and the Colour Wheel. By distinguishing between primary, secondary, and tertiary colours, and mastering hue, value, and saturation, students is equipped to use colour effectively in their artistic pursuits. The creation of a personal colour-mixing reference will serve as a valuable tool for future projects.

Study Notes

The primary colours are red, blue, and yellow; all other colours are derived from these.
Secondary colours include green, orange, and purple, created by mixing primary colours.
Tertiary colours are made by mixing primary and secondary colours and have unique names.
Hue refers to the name of a colour; value refers to its lightness or darkness; saturation refers to intensity.
Using a limited palette is key to controlling colour muddiness and achieving desired effects.
Develop a personal colour mixing chart for easy reference in future projects.