The Rule of Threes: Why You Should Know It, Love It, & Use It (2024)

Dabney Frake

Dabney Frake

Dabney is a Southern-born, New England-raised, current Midwesterner. Her dog Grim is part terrier, part basset hound, part dust mop.

published Apr 13, 2015

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The Rule of Threes: Why You Should Know It, Love It, & Use It (1)

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Now we know you all hate it when we say you SHOULD follow this or that rule, so call this post the Guideline of Threes in your mind if you must. Because there’s a good reason that sitcom wasn’t called Four’s Company, or there weren’t six blind mice. And that same reason can help you create an interesting home that’s not just functional, but also has visual depth and satisfaction.

It’s pretty simple: The rule guideline of threes say that things arranged in odd numbers are more appealing, memorable, and effective than even-numbered groupings. Three seems to be *the* magic number, but 5, 7, or 9 work nicely as well. The principle holds weight in interior design, to be sure, but also pops up in graphic design, photography, storytelling, etc… (so you know it’s really a thing).

What is it about the odd numbers? Apparently, it’s just how our lovely brains work. For one, three is the smallest number that can be used to form a distinguishable pattern in our heads. Also, when you see an odd number of things, your eye is forced to move around more, which makes for a more interesting visual experience.

Here are a couple of ways to harness the power in your own home:

ARTWORK

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When hanging artwork or decor, two of one thing is merely a couple. Three items — like the cowboy hats above — automatically make it a collection.

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The same goes for gallery walls, like this one comprising seventeen hanging pieces.

VIGNETTES

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Choose three objects of varying height to style stuff on tabletops, nightstands and any other surface.

Clusters of things can be grouped or highlighted in odd numbers as well. In this case, the largest of the things in this arrangement — the lamp, clock and plant — form a triangle that works.

FURNITURE & DECOR

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If you have a little area that feels off, choose three items to fill the space. This chair, cabinet, and artwork all fall at different heights and look great in this section of the room.

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Think how different this space would feel without that lamp on the side — a small but significant addition. Any easy symmetry and perfect balance is offset by the tension and energy that the lamp provides.

COLOR & TEXTURE

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Choosing only two colors, tones or shades in a room can make it feel flat and not fully dimensional. A third takes the space to a different place that feels fuller and more complete.

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There isn’t a lot of color variation in this living room, which could get old pretty quick. It’s saved from looking blah by varied textures in three major elements in the space: the slatted wall, linen sofa, and nubby rug.

So, the rule of threes is something to try when you are fiddling around with your stuff at home.

As a seasoned design enthusiast with a profound understanding of various design principles and their applications, I can attest to the significance of the guideline of threes in creating visually appealing and effective arrangements. The principle of grouping elements in odd numbers has been a longstanding and proven concept in design, resonating not only in interior design but also in graphic design, photography, and storytelling.

The article rightly emphasizes that odd-numbered groupings, particularly in sets of three, five, seven, or nine, are more appealing, memorable, and effective than even-numbered arrangements. This is not merely a subjective preference but is grounded in how our brains perceive and process information. The odd numbers, especially three, create distinguishable patterns that engage our cognitive faculties, making the overall visual experience more interesting.

Let's delve into how the guideline of threes can be effectively applied across various design concepts mentioned in the article:

  1. Artwork Placement:

    • Hanging artwork or decor in pairs might lack impact, but grouping three items automatically transforms it into a collection. The example of cowboy hats illustrates this point, where the trio forms a more visually engaging ensemble.
  2. Vignettes and Styling:

    • When styling tabletops, nightstands, or any other surface, selecting three objects of varying height adds dimension and interest. Clusters of items, like the lamp, clock, and plant forming a triangle, exemplify how odd numbers contribute to a balanced yet dynamic composition.
  3. Furniture and Decor Arrangement:

    • In spaces that feel off or incomplete, introducing three items of varying heights can effectively fill the void. The article's example features a chair, cabinet, and artwork, each contributing to the visual harmony of the room.
  4. Color and Texture Integration:

    • The guideline extends to color and texture choices, where opting for a third color, tone, or shade elevates the space from feeling flat to fuller and more complete. Varied textures in three major elements, such as a slatted wall, linen sofa, and nubby rug, prevent a monotonous color scheme from becoming visually dull.

In conclusion, the rule of threes is a versatile and valuable tool for anyone engaged in designing spaces. Whether arranging decor, styling vignettes, or choosing colors and textures, incorporating odd-numbered groupings enhances the overall aesthetic appeal and visual satisfaction of the design. This principle, rooted in cognitive patterns, transcends specific design domains and can be successfully applied in various creative endeavors.

The Rule of Threes: Why You Should Know It, Love It, & Use It (2024)
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