I’m going to tell you something that might save you a hundred dollars and a weekend of repainting: the way most people choose paint colours almost guarantees they’ll get it wrong.
Someone will walk into Bunnings, grabs a fan deck, holds a tiny swatch up to the wall under fluorescent store lighting, and commits to four litres of something called ‘Whisper Grey’ based on a chip the size of a postage stamp. Then they paint the room, stand back, and think: that’s not what I expected.
It’s not your fault. Paint companies print thousands of colours precisely because the variation between them is almost invisible on a small swatch. The difference between a warm grey and a cool grey is barely perceptible on a 2cm square. On a four-metre wall, flooded with afternoon light, it’s the difference between a room that feels like a warm embrace and one that feels like a hospital corridor.
The Three Mistakes
Mistake 1: Ignoring undertones
Every paint colour has an undertone — a secondary colour lurking beneath the surface that only reveals itself once it’s on the wall and light hits it. Whites are the worst offenders. Dulux ‘Lexicon’ looks white on the swatch but reads distinctly blue-grey on a south-facing Melbourne wall. Dulux ‘Antique White USA’ looks almost identical on the swatch but reads warm, creamy, and sun-drenched in the same room.
To identify an undertone, hold the swatch next to something you know is truly neutral — a piece of plain white printer paper works. The undertone will suddenly jump out. Is the swatch pinkish compared to the paper? That’s a warm undertone. Bluish or greenish? Cool. This matters enormously because your room’s fixed elements — your floorboards, your tiles, your benchtops — all have undertones too, and they need to agree.
Mistake 2: Choosing in the wrong light
This is the big one, especially in Melbourne. Our light changes dramatically depending on orientation. A north-facing room in Fitzroy gets warm, golden light for most of the day. A south-facing bedroom in the same house gets cool, indirect light that makes warm colours look muted and cool colours look even colder.
The rule is simple: always test paint in the room it’s going in, at multiple times of day. Buy sample pots (every major paint brand sells them for $8–12), paint a large square on a piece of card (not directly onto the wall — you want to be able to move it around), and look at it in the morning, at midday, and at night with the lights on. A colour that looks perfect at 10am might look completely different at 8pm under a warm LED.
Mistake 3: Picking colours in isolation
A paint colour doesn’t exist in a vacuum. It sits next to your floorboards, your rug, your curtains, your bedhead. If you choose a wall colour without considering what’s already in the room, you’re gambling. Beautiful paint choices can be ruined by a clash with orange-toned timber flooring that nobody noticed until the room was fully painted.
Before you commit to any colour, gather samples of every fixed element in the room — a floorboard offcut, a tile, a cushion fabric, a piece of your curtain — and put them all together with your paint swatches. Is the contrast soothing or does it feel like they are all shouting?
What to Do Instead
Start with what you can’t change. If your floorboards are warm honey oak, your palette needs to work with warm tones. If your tiles are cool grey, lean cool or use a genuinely neutral bridge colour.
Then pick your white first. In Australia, your white is probably doing 60–70% of the visual work in any room (walls, ceiling, trim). Get the white right and everything else becomes easier. For most Australian homes with natural timber floors and good natural light, I recommend starting with Dulux ‘Antique White USA’ for walls and Dulux ‘Natural White’ for trim. These are warm without being yellow, and they glow in Australian light rather than looking flat.
If your room faces south or gets limited natural light, go even warmer — Dulux ‘Antique White USA’ is still my pick, but consider Dulux ‘Surfmist’ as a trim colour for a slightly softer, warmer edge than Natural White.
For rooms facing north with abundant light, you have more flexibility. You can get away with slightly cooler whites like Dulux ‘White on White’ without the room feeling clinical.
And please — always buy the sample pots. Twelve dollars and twenty minutes of your time is infinitely cheaper than repainting a room.
RELATED RESOURCES
→ Our Coastal Australian Bedroom Kit includes a complete Dulux colour palette with primary and accent colours chosen specifically for Australian light. Download it here.
→ Need help choosing for your specific room? Book a 30-minute colour consultation — I’ll tell you exactly which white (and accent colours) will work. $150 via Zoom.