Colour Mixing Guide for Artists

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Mixing paint colours is one of those skills that seems simple until you actually try it. You squeeze out some blue and some yellow expecting a vivid green, and instead you get a murky olive. You add white to lighten a red and somehow end up with bubblegum pink instead of the soft rose you envisioned. The Colour Mixing Guide for Artists is a free interactive reference that shows you exactly which pigments to combine, in what proportions, to get the colour you want - whether you work in acrylics, oils, watercolours, or gouache.

Understanding Colour Theory Basics

Before you mix a single drop of paint, a little theory goes a long way. The guide covers the essentials:

Primary colours - red, blue, and yellow in traditional paint mixing (or cyan, magenta, and yellow in process colour) - cannot be created by mixing other colours together. Every other colour starts here.

Secondary colours - orange, green, and purple - are made by mixing two primaries in roughly equal parts. But "roughly equal" is doing a lot of heavy lifting in that sentence, because different pigments have vastly different tinting strengths. A tiny amount of phthalo blue can overpower a large dollop of cadmium yellow. The guide provides specific ratio recommendations for common pigment brands so your mixes actually work.

Tertiary colours - yellow-orange, red-orange, red-purple, blue-purple, blue-green, yellow-green - fill the gaps on the colour wheel and are where most of the nuance in painting lives. Mastering tertiaries is what separates flat, cartoonish colour from rich, lifelike palettes.

Warm vs Cool - The Secret to Vibrant Mixes

One of the biggest revelations for beginner painters is that not all reds are the same. Cadmium red leans warm (toward orange), while alizarin crimson leans cool (toward purple). When you mix a warm red with a warm yellow, you get a brilliant, clean orange. Mix a cool red with a warm yellow and you get a duller, more muted orange because you are effectively mixing all three primaries, which pushes the result toward brown or grey.

The Colour Mixing Guide explains warm and cool bias for every common pigment and shows you which combinations produce clean, vibrant results and which produce intentionally muted, earthy tones. Both have their place on the palette - the key is knowing which you will get before you commit paint to canvas.

Practical Mixing Recipes

Beyond theory, the guide includes ready-to-use mixing recipes for frequently needed colours:

Skin tones - a notoriously tricky category that requires balancing warm and cool, light and dark, saturated and desaturated. The guide offers starting-point recipes for a range of skin tones and explains how to adjust warmth, value, and chroma from there.

Landscape greens - straight-from-the-tube green almost never looks natural. The guide shows you how to mix olive greens, sage greens, forest greens, and bright spring greens by starting with different blue-yellow pairs and modifying with earth tones.

Greys and neutrals - mixing complementary colours (red and green, blue and orange, yellow and purple) produces far more interesting greys than simply adding black to white. The guide demonstrates several complementary grey mixes with visual examples.

Medium-Specific Advice

Paint behaves differently depending on the medium. Acrylics dry darker than they appear wet, so you need to mix slightly lighter than your target. Oils stay workable for hours, allowing gradual blending on the canvas. Watercolours are transparent, so you lighten by adding water rather than white paint. The guide includes medium-specific tips throughout so the advice applies to your actual working process.

Always Available, Always Free

The Colour Mixing Guide for Artists runs in your browser with no downloads or sign-ups. Bookmark it and pull it up next to your easel whenever you need a quick mixing reference. Better colour mixing means less wasted paint, fewer muddy canvases, and more time spent creating art you are proud of.