Colour Mixing Tips

Colour mixing is one of the most important skills an artist can learn. Understanding how colours interact allows you to create harmony, depth, and consistency in your artwork, while also reducing reliance on pre-mixed paints. With a solid grasp of colour mixing basics, artists gain far greater control over mood, realism, and expression.

Start with the Primary Colours

The foundation of colour mixing lies in the three primary colours: red, blue, and yellow. These colours cannot be created by mixing other colours and are used to produce all secondary and tertiary colours.

• Red + Yellow = Orange
• Blue + Yellow = Green
• Red + Blue = Purple

When mixing, always start with small amounts. Add colour gradually and test mixtures before committing them to your artwork.

Understand Warm and Cool Colours

Each primary colour exists in both warm and cool variations. For example, a warm red may lean toward orange, while a cool red leans toward purple. Mixing a warm yellow with a cool blue produces a very different green than mixing a cool yellow with a warm blue.

Recognising temperature differences helps prevent muddy colours and allows for more predictable mixing results.

Mix Colours Slowly and Intentionally

Rushing colour mixing often leads to dull or overworked results. Use a palette knife or brush to mix thoroughly, and avoid adding too many colours at once. Limiting mixes to two or three colours usually produces cleaner, more vibrant hues.

Always allow acrylic or watercolour mixes to dry slightly before judging the final colour, as many paints dry darker than they appear when wet.

Avoid Using Black to Darken Colours

A common beginner mistake is using black paint to darken colours. While this can work in some situations, it often results in flat or lifeless tones. Instead, darken colours by mixing in their complementary colour (the colour opposite on the colour wheel).

For example:

• Darken red with a touch of green
• Darken blue with a small amount of orange
• Darken yellow with purple

This approach creates more natural shadows and depth.

Create Colour Harmony

Colour harmony occurs when colours work together visually rather than competing. Using limited colour palettes helps maintain harmony and prevents visual chaos. Many artists restrict themselves to a small selection of colours per painting to achieve cohesion.

Analogous colour schemes (colours next to each other on the colour wheel) create calm, unified compositions, while complementary schemes add contrast and energy.

Keep a Colour Mixing Reference

Maintaining a colour mixing chart or journal is extremely useful. Record paint combinations, ratios, and results for future reference. Over time, this becomes a personalised guide that saves time and improves consistency.

Practice with Purpose

The best way to improve colour mixing is through deliberate practice. Set aside time to mix colour scales, gradients, and variations without the pressure of creating a finished artwork. These exercises strengthen colour intuition and confidence.

Mastering colour mixing takes time, but the rewards are significant. With practice and observation, artists develop the ability to mix virtually any colour they need, enhancing both technical skill and creative freedom.