Colour theory is one of those things that seems academic until you're standing in front of a wall trying to figure out why your piece looks flat. Getting your colours right doesn't take an art degree — it takes understanding a few fundamentals and applying them to how paint actually behaves on a surface.
The Basics: Primary, Secondary, Tertiary
You already know red, blue, and yellow are primaries. Mix them and you get your secondaries — orange, green, purple. Mix a primary with an adjacent secondary and you get tertiary colours — yellow-orange, blue-green, red-violet, and so on.
In graffiti, the tertiary colours are where interesting palettes live. Instead of pure red with pure blue, try red-orange with blue-violet. Immediately more complex, more alive.
Complementary Colours: The High-Contrast Hit
Complementary colours sit opposite each other on the colour wheel — red/green, blue/orange, yellow/purple. Put them next to each other and they vibrate. They make each other pop. This is why so many classic pieces use a blue fill with an orange outline, or a yellow fill with a purple 3D shadow.
Use complementary colours when you want visual impact — big, readable pieces that hit from a distance. The risk is that they can feel garish if you overdo it, so balance with neutrals (black, white, grey) to anchor the palette.
Analogous Colours: The Smooth Blend
Analogous colours sit adjacent on the wheel — blue, blue-green, and green, for example. They blend naturally and create harmony. Use these for smooth fades, backgrounds, and when you want a piece that flows rather than pops.
A classic move: fade from a deep purple through to blue and hit a cyan highlight on the letters' edges. All analogous, all smooth. Drop in a contrasting orange outline and you've got depth without chaos.
Light and Shadow
Light comes from somewhere — pick a direction and stick with it. If your light source is top-left, your highlights sit on the top-left edges of each letter, your shadows fall bottom-right.
For shadows, don't just add black. Adding black to a colour usually makes it look muddy. Instead, shift toward the complementary colour in a darker value. Blue fills shadow well with a darker purple or navy. Red fills shadow with dark maroon or burgundy, not with raw black.
For highlights, white works, but so does a lighter tint of your base colour. Try a light cyan highlight on a blue fill rather than pure white — it reads as light more naturally.
Background vs. Fill vs. Outline
Think of your piece in three colour layers:
- Background: Should recede — cool colours, low saturation, soft spray. You want the letters to sit in front of it, not compete with it.
- Fill: Your main statement. This is where your style lives. One or two colours maximum if you're starting out. Add a fade only if you can execute it cleanly.
- Outline: Usually dark or black. The outline is what defines readability. Black reads from distance; dark blue or dark brown are alternatives that feel more refined up close.
Warm vs. Cool
Warm colours (reds, oranges, yellows) advance — they feel closer, more aggressive, louder. Cool colours (blues, greens, purples) recede — they feel deeper, calmer, further away. Use this to your advantage: warm fills with cool shadows create natural depth. Cool backgrounds make warm fills sing.
Practical Tip: Limit Your Palette
The most common colour mistake beginners make is using too many colours. Start with three: a background colour, a fill colour, and a contrast/outline colour. Nail the execution before adding complexity. A two-colour piece done well always beats a six-colour mess.
MTN Hardcore has a wide colour range — but having access to every colour doesn't mean using every colour. Pick your palette before you pick up a can. Browse the full MTN Hardcore colour range here.