Material & Techniques

Colour theory encompasses colour mixing, harmony, and context. A colour wheel is a mixing tool consisting of primary, secondary, and tertiary colours arranged in a circle that looks like a wheel. The colour wheel is also divided into two halves of cool and warm colours.


The three primary colours are red, yellow, and blue. The three secondary colours are orange, green, and purple; they are derived from mixing two primaries. There are six tertiary colours on the wheel are red-orange, yellow-orange, yellow-green, blue-green, blue-purple, and red-purple; they are produced by mixing one primary and one secondary colour.


Colour harmony simply means a structured, balanced, and orderly arrangement of colours that is pleasing to the eye. Colour harmony can be achieved using the tried and tested colour schemes or by looking at colour combinations in nature. Nature provides colour combinations that show different colours that work well together even if they depart from the popular colour schemes. Sometimes, unusual colour combinations in nature show up in perfect harmony.


The three most common colour schemes are analogous, complementary, and triadic colours. Analogous colours refer to any three colours that are side by side on the wheel. Complementary colours refer to any two directly opposing colours. Triadic refers to three colours that form a triangle on the wheel.



Acrylic Ink is a fast-drying fluid colour consisting of super-fine pigments suspended in a watery acrylic emulsion. The emulsion dries into a water-resistant film that is permanent. The dried film does not smudge or bleed when layered or rewetted.


Acrylic ink uses artist quality lightfast pigments that do not fade or shift over time; they come in a range of opacities. Acrylic ink is non-clogging and can be used in an airbrush and with dip pens. The ink can be used with other water-based media and is suitable for mixed media work, printing, and stamping. Acrylic ink adheres to a variety of surfaces, such as canvas, board, wood, fabric, and paper.



Watercolour paint consists of finely ground powdered pigments suspended in a water-soluble binder. Water is mixed with the paint during application. When water evaporates, the binder fixes the pigments to the surface, usually paper. The binder is made up of gum (e.g., gum arabic or dextrin), glucose, glycerine, brightener, fillers, and wetting agents. Glucose and glycerine slow drying time and make the pigments easier to dissolve. Brightener enhances colour and textures. Fillers help pigments adhere to surfaces.


Dried watercolour paint is not water-resistant nor permanent; it bleeds and lifts when layered or rewetted. Workable fixative may be used sparingly to secure under layers, but this method is not without controversy.


Watercolours are sold in blocks or tubes. The paint can be applied wet-on-wet and wet-on-dry for different effects. Watercolour transparency is unsurpassed by any other media. Also, the whites in oils and acrylics are created by adding opaque white paint while the whites in watercolours are mostly achieved by exposing the white of the paper. Watercolour paint adheres to many other surfaces apart from paper such as certain plastic, vellum, leather, fabric, and specially primed canvas.



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