27 Funky Geometric Designs to Paint on the Wall in Your Boy’s Room

Whenever I get the itch to start a redesign on my home, the first rooms I start with are always my kids’. They’re smaller, I like to make my kids feel special, and quite frankly their rooms are way more fun to do! I always use a fresh coat of paint because it’s the cheapest, easiest way to freshen up a room.

Wallpaper is scary to me, thanks to a traumatizing summer nearly 20 years ago that I spent steaming and scraping seven layers of wallpaper off of my old bedroom – including the ceilings. But I’m cool with any design I can paint on the walls because it’s easy to paint back over them if they become dated.

If you’re looking for some funky geometric designs to paint the wall in your boy’s room, I’ve done a ton of searching to come up with some really awesome ones. Some of these have links to tutorials, too!

Small Strip of Wall

Not ready to take the plunge on an entire bedroom wall? Try a sliver of wall between closets (or even inside the closet itself!). And nothing says “boy’s room” like splatters of paint as a finishing touch.

Mountains are Just Triangles

Before you argue this is not a “geometric” design – please keep in mind that mountains are just triangles, and triangles are definitely geometric. This look is easily achieved with painter’s tape and lends itself to a really cool boy room theme.

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Geometric Blue & Gray Triangles

This is the epitome of geometric design trends – various triangles in similar tones separated by wide painter’s tape (this 3-inch-wide tape will give you bright, bold lines). Simple, clean, and bright!

Bold White Lines with Black Triangles

Is your son begging you for black walls? Here’s a compromise: one black accent wall, filled with extra-wide white geometric lines. He’ll end up liking it better than his idea, I promise.

Funky Geometric Accent Wall

This remarkable geometric design is a nice, masculine twist on the chevron pattern, and gives the opportunity to use more than two colors. It’s busy, though, so keep it to just one wall.

DIY Painted Hexagons

Looking for a little more uniformity in your geometric paint design? As an orderly perfectionist, I hear you. This hexagon pattern checks all my boxes and makes it easy to choose where to add a pop of color to your boy’s room.

Hexagon Pattern on Demand

Does tape and painting and more tape and painting sound like too much work? Buy a few pre-cut shapes and arrange them over a strip of the wall as a statement. You can get these hexagons in a ton of colors on Etsy.

Mixed Medium Geometric Accent Wall

You’ll need a ladder and some careful cutting – plus a healthy relationship with wallpaper – to achieve this look. Mix painted shapes with woodgrain wallpaper. Instead of worrying about crisp paint lines between the shapes, make them pop with carefully applied shiny gold or silver tape. This metalized mylar film tape even comes in 6 different colors to match any theme!

Stenciled Diagonal Stripes

Bold stripes like these will work on one, two, three, or all four walls of your boy’s room. If you’ve got a laser level and a ton of patience, you can achieve this look with just tape. Make sure you tape the diagonal lines so that they meet in the corners. If that sounds like a giant headache, though, I’d recommend getting a stencil.

Paint Big Geometric Pieces

Painting a geometric design in your boy’s room doesn’t have to be difficult or involve dozens of shapes. If you’d like, just tape off a few large sections and choose colors in the same family for a cohesive look.

Argyle-Painted Accent Wall

Argyle is a pattern that’s masculine while still giving you warm, fuzzy feelings (sweaters, anyone?). It’s a geometric design that looks more complicated than it is, too, making your efforts impressive to anyone you show it to.

Colorful, Funky Geometric Design

This is a gorgeous, carefully constructed design with massive visual appeal. See how there’s no need to hang anything on the wall where all the geometric craziness is happening? And then where there’s furniture, it’s a large, solid triangle. Perfect!

Partially-Geometric Wall

If you’re not ready to commit to “shaping” up a whole wall but don’t have a small one to test the waters with, try building out a geometric design starting from one corner and stop when you think you’ve had enough.

3D Ombre Cubes

This design’s not done with paint, but it’s not as hard as it looks. Think of the alternating rows as reverse chevrons. The tabs alternate between orange and wood grain. The orange itself is cut in an ombre pattern. See? Simple! And it gives the room an amazing, textured vibe.

Stripe the Bathroom

Does your son have a private bathroom? Let him go hog wild taping off a pattern to paint in there. If you end up hating it, you never have to see it! (What, am I the only mom that makes my husband clean all the toilets?)

Geometric Colors of the Quirky Rainbow

Do you tend to change accent colors frequently? Keep yourself from having to repaint every time by including the whole dang rainbow the first time. Just imagine this red-themed room with yellow instead. It still works, right?!

The Hills are Made of Paint

Geometric paint design doesn’t have to mean clear-cut triangles, circles, or rectangles. You can use painter’s tape to make any sharp lines you want to paint around, like the angles used to create this landscape look behind a daybed.

Ride the Waves

You can use shaped stencils to create a whole bunch of themed designs for your son’s room. In this one, triangles help enhance a sailing theme.

DIY Moroccan Stencil

A classic, simple, always-in-style pattern can lend a lot to your boy’s room. Not technically geometric, it’s still an easy paint job. It’s also a simple enough pattern to be used over the whole room or just an accent wall.

Mature Geometric Grey Tones

Do you have a teenage boy on your hands who’s “too mature” for every bright color you suggest? You can still get away with a dramatic look using only grey tones in a wickedly awesome geometric design.

Rectangles Top to Bottom

Replicate a neat tile look with nothing but a few paint colors! Easily mix warm and cool tones with a series of rectangles.

Draw Cool Designs with Paint Pens

Do you already love the color of your wall, you just want to give it an eye-catching pattern? Use a stencil and paint pens and be done with it! You can get some really great white paint pens here.

Wrap it Around the Ceiling

What takes more commitment than painting a funky geometric design across an entire wall in your boy’s room? Wrapping a strip across the ceiling. This is not for the faint of heart, but it’s a cool way to join two opposing walls with geometric shapes.

Point it Out with Triangles

This point just draws your eye to… a closet. But you can use geometric design in this clever method to draw the eye to something important in your boy’s room, like down to his bed or over to a special photo hanging on the wall.

Only Color the Lines

You’ll die when you see how easy this geometric design is achieved. Just paint the wall the color you want the lines to be, tape off the lines in an eccentric geometric design, then paint the wall again in a few coats of white (or whatever color you want).

Compliment the Look

Complimentary colors can lend to a bright, energetic feel in your boy’s room. You can try sticking to just two complementary colors (red and blue, green and yellow, even orange and purple). Use them in even amounts, or choose one to be the majority of the wall while the other pops out every so often.

Dress Up Behind the Bed

You could purchase a premade woodgrain chevron/arrow-style piece of wall decor to put behind your son’s bed. OR, you could create the look yourself with different shades of brown paint, some creative paint streak tactics, and a boatload of painter’s tape.

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What’s your favorite look on this page? Have you gotten a good idea for painting a wall in your boy’s room with a geometric design? What’s your plan? Tell me in the comments!