5 Mistakes People Make When Decorating in Threes

You did everything the design blogs told you. Three vases, three candles, three of something. So why does it still look off? Turns out, the number was never the problem.

At some point, you’ve probably heard of the rule of three. You’ve even tried to use it, but somehow, that combination of three vases you lined up on your coffee table still isn’t Pinterest-worthy.

The reason grouping in threes has been a gold standard for designers has to do with eye movement and how our brain works. Our brain naturally searches for patterns and symmetry and in our minds, even numbers pair up. Once the brain sees an array of even-numbered objects, the arrangement appears flat and static.

On the other hand, odd numbers do the opposite. They allow the eye to keep moving around the group instead of settling.

Why three? It’s the smallest unit of arrangement that can satisfy the mind. It creates a focal point, complemented by the other two elements that provide balance and context. There’s a beginning, middle, and end, which makes the entire arrangement look curated. It’s a visual balance that looks natural yet intentional.

But here’s what you probably don’t know. The rule isn’t ironclad. Knowing it and pulling it off are two different skills. If you think you’re doing it right, and it still looks wrong, you’re probably making one of these mistakes when decorating in threes.

1. You’re Using Three Identical Objects

This is the biggest mistake. If the goal is to create movement for the eye, then grouping three pieces of the same size, shape, everything, defeats that purpose. Because again, the arrangement appears flat to the eye. Aim for variety in size and shape and you're bound to get it right.

2. You’re Missing Something that Ties the Pieces Together

It’s not enough to gather three random objects together, because then they appear cluttered, not intentional. These pieces need to have a link between them. They could share the same color, same material, or style, never mind if everything else about them is different.

3. You’re Overdoing It

You finally got it right, so now every corner of your home screams rule-of-three. Hold your horses and give your eye a break. Because your eyes never get a place to rest when all they see are groupings of three. Remember, not everything has to be a trio.

4. You’re Ignoring Proportions

In this case, you got the number right, but the scaling wrong. If you’re laying out three tiny candles on a long dining table, or crowding huge vases on a small side table, then the rule of three isn’t going to help. Make sure to match the size of your pieces to your surface.

5. You’re Forcing The Rule of Three Where Symmetry is Key

Sometimes, the situation requires balance, and the rule of three won’t work. Small spaces or minimalist interiors may opt for pairings instead. Think a couple of pendant lights over a dining table versus three. Forcing an odd grouping into a space that wants symmetry is its own kind of mistake.

So here's the truth. The rule of three isn't hard to follow. It's just easy to get almost right. Simply avoid these five mistakes, and your design may just become worthy of that spot on Pinterest.