Painting and colour media: the behaviour and handling of watercolour, acrylic, oil, gouache and dry colour media, and how to select and control them to serve an intention for AO2.

What this dot point is asking

Painting and colour media are a major route to AO2, the objective that rewards exploring, selecting and refining media. Each medium (watercolour, acrylic, oil, gouache, and the dry colour media) behaves differently, and using one well means understanding its properties and handling it for its strengths. This dot point is about how the main media behave and how to select and control them with intention, so your experiments earn AO2 rather than fighting the material.

Why media behaviour matters

The single most useful idea in working with paint is that each medium has a behaviour you must work with, not against. The same subject looks different in watercolour and acrylic not because one is better, but because their properties (transparency, drying time, opacity) lead to different methods. Choosing a medium because its behaviour suits your intention, and handling it accordingly, is the heart of AO2.

Transparent media: watercolour

Watercolour is transparent: the paper shows through the paint, and layers glow through one another. This dictates the method.

Opaque media: acrylic, oil and gouache

Opaque media cover what is beneath them, so the method reverses: you can work dark to light and add highlights last.

• Acrylic is opaque, water-based and fast-drying. It can be thinned to wash-like transparency or used thickly (impasto), layers quickly, gives crisp edges, and lets you correct by overpainting. Its speed suits bold, layered, hard-edged work, but it dries too fast for long blending.
• Oil is opaque and slow-drying, which allows subtle blending, soft gradations and rich glazes built over days. It suits subtle tonal modelling and luminous colour, at the cost of long drying and more complex materials.
• Gouache is opaque watercolour: water-based, flat and matte, good for solid areas of even colour and a graphic, poster-like finish.

Dry colour media

Colour is not only wet. Dry media give immediate, tactile colour and blend directly on the surface.

Coloured pencil layers and burnishes for controlled, detailed colour; soft pastel is pure pigment that blends richly and covers fast but smudges; oil pastel is waxy, bold and blendable with solvent. These suit drawing-led colour work and rapid colour studies, and they integrate naturally with observational drawing, so they are a useful bridge between the drawing and painting modules.

Try this

Q1. State the working method (light to dark or dark to light) for watercolour and for acrylic, and why. [Knowledge recall]

• Cue. Watercolour is worked light to dark because it is transparent and the paper provides the lightest tone, so highlights are reserved; acrylic is opaque so it can be worked dark to light, with highlights added last as solid paint.

Q2. Explain why selecting a medium because its behaviour suits the subject is what earns AO2, rather than the medium itself. [Short explanation]

• Cue. AO2 rewards exploring, selecting and controlling media for a reason; choosing a medium whose properties (transparency, opacity, drying time) suit the intended effect, and handling it for its strengths, demonstrates the purposeful selection and control the objective rewards.