How to Choose a Paint Colour That Actually Works in Your Space

Can I tell you how many people I’ve spoken to who have painted a wall, stepped back, and felt their stomach drop? The colour looked perfect on the chip. It looked great in the store. And now it’s on the wall and it’s completely wrong.

This happens all the time and it is not your fault. There are a few things working against you when you choose paint colours without a process. Once you know what they are, the whole thing gets so much easier. Let me walk you through it.

Start with the light in your room

This is the step most people skip and it causes so much heartbreak! Before you even think about a colour, you need to understand how light behaves in your space. A cool white that looks crisp and fresh in a north-facing room can read grey and flat in a south-facing one. A warm beige that feels gorgeous in the afternoon can look almost orange first thing in the morning. Check which direction your room faces, how many windows you have, and whether anything outside is blocking the natural light coming in. That context will change everything about which colours actually suit your space.

Get your head around undertones

Every single paint colour has an undertone. It is a subtle base colour sitting beneath the surface and it only reveals itself when the light hits it a certain way or when you place it next to something else. That gorgeous greige that looked so neutral at the paint shop? Put it next to your white window frames and suddenly it looks green. That beautiful sophisticated grey? It might go practically purple on a sunny afternoon.

The easiest way to spot an undertone is to hold the chip against a clean, pure white. Whatever colour pops is the undertone. Then take your chips home and look at them in your actual room at different times of day. Morning, midday and evening light will all read differently and you want to know what you are working with before you commit.

Once you can see undertones you will never be blindsided by a paint colour again.

Narrow it down to three options

I know it is tempting to tape ten chips to the wall and stare at them for a fortnight. But decision fatigue is real and too many options actually makes it harder to choose. My suggestion is to shortlist to three colours maximum. From those three, ask yourself: does this work with my flooring? Does it suit the mood I am going for? How does it look next to my cabinetry or tiles? Your floors are fixed so your walls need to work with them, not fight them.

Test on the wall properly

Paint chips genuinely lie. A tiny rectangle of colour does not show you what that shade will look like at scale. The only way to know for sure is to test it on the actual wall with a proper patch. And I mean a real one, not a little square the size of your hand.

• Paint a section at least 30cm x 30cm, bigger if you can manage it.
• Do two coats. One thin coat gives a totally different result.
• Test on at least two walls in the same room, one that gets direct light and one that does not.
• Look at it over a couple of days at different times.

Yes it takes a little longer but it is so much better than repainting an entire room.

Then trust yourself and commit

If you have done the work and tested properly, trust the process. Paint is one of the most affordable and impactful changes you can make in a home, and if something really does not work out you can always change it. Do not let the fear of getting it wrong stop you from making a decision. You have done the homework. Go for it.

Still unsure and want a second set of eyes on your space?

My Pick My Brains sessions are a one-on-one with me where you can bring exactly this kind of question. Bring your photos, your shortlisted colours and your flooring details and we will work through it together. Practical guidance that gives you the confidence to actually make the call.