What Color Swimsuit Is Safest? A Guide to Picking by Where You Swim

Most people who worry about ocean safety are worrying about the wrong thing. Sharks get the headlines, but the risk that actually shows up in the data is drowning — and swimsuit color has a real, tested effect on whether someone in trouble gets spotted in time.

Here's what the research says, sorted by where you're swimming.

The rule behind all of it: contrast beats color

There's no magic safe color. There's only how a color reads against the water around it. A suit that glows in a turquoise pool can vanish completely in a green lake.

Aquatic safety firm ALIVE Solutions tested 14 swimsuit colors underwater in pools and in lake water, photographing each one submerged, with the surface agitated, and from a few different viewing angles. Two things showed up over and over: pale colors dissolve into the water, and dark colors are visible but easy to dismiss — as a shadow, a pile of leaves, a towel on the bottom. Co-founder Natalie Livingston, a former lifeguard and drowning investigator, has pointed out that survivors and witnesses often say they saw something underwater and talked themselves out of it. A bright color makes you look twice.

That's the whole principle. Now the specifics.

In the pool

Avoid: white, cream, pale blue, white-and-blue prints, pastels — and be cautious with black, navy, and gray.

White and light blue were the two worst performers in ALIVE's pool test; they essentially disappear against a light pool bottom. Dark suits do stand out against a pale bottom, but they read as debris or shadow, especially once the surface is choppy.

Best: neon pink and neon orange were the top two performers in the pool.

In a lake, river, or bay

Avoid: red, hot pink, orange-red, plus all the usual suspects — white, blue, green, gray, black.

This is where it gets counterintuitive. Warm colors that perform beautifully in a pool get eaten by murky, tannin-brown water. In ALIVE's lake test, red and pink largely didn't register. White landed mid-pack but looked more like sun glare or cloud reflection than a person.

Best: neon yellow, neon green, and neon orange were the standouts in open water.

In the ocean

The published testing covers pools and lakes, so treat this as applying the same contrast principle rather than a lab result — but the logic transfers cleanly.

Avoid: navy, black, and charcoal, which read as shadow, kelp, or rock. Blue, aqua, and teal, which are the literal color of the water. White and cream, which disappear into foam, chop, and whitecaps.

Best: neon yellow, neon green, and neon orange, for the same reason they win in a lake — they're colors that don't occur naturally in the water column.

Skip busy, low-contrast prints too. Patterns break up the outline of a body, which is exactly what a lifeguard is scanning for.

For kids, color is the last line of defense — not the first

Drowning is the leading cause of death for children ages 1 to 4 in the United States, and the second leading cause of unintentional injury death for kids 5 to 14. It's fast, and it's usually silent.

So yes: put kids in neon. Neon yellow and neon green are the most reliable performers across both pool and open water, and a contrasting two-piece combination (neon orange rash guard, neon lime bottoms) makes a small body even easier to pick out.

But a bright suit doesn't keep anyone afloat. In open water, that means a properly fitted, U.S. Coast Guard-approved life jacket — not water wings, not a pool noodle. Of everyone who drowned while boating in 2022, 85% weren't wearing one. Swim lessons matter enormously too: one study found kids ages 1 to 4 who'd had formal lessons had an 88% lower drowning risk.

Color helps someone find your kid. Supervision, a life jacket, and swim skills are what keep them from needing to be found.

And about the sharks

The old diving saying is "yum yum yellow" — the idea that sharks are drawn to bright yellow. It's half true, and the half that's false is the color part.

Research indicates most or all sharks are effectively colorblind. They lack the retinal machinery for comparing wavelengths and instead discriminate by brightness. A shark isn't seeing "yellow." It's seeing a bright object against a dark background, which is worth investigating. That's also why the early tests that produced the phrase found sharks approaching yellow and white objects — those simply read as the brightest shapes in the water.

Which leaves an honest tension: the same high-contrast colors that help a lifeguard find you also make you a more conspicuous shape to a curious shark.

The Florida Museum's International Shark Attack File addresses that trade-off directly, noting that the benefit of being findable by human rescuers far outweighs the minimal added risk of drawing a shark's attention. If you're specifically in a high-shark-activity situation — spearfishing, diving at dusk, swimming near a bait ball — dulling down your gear and skipping anything shiny is reasonable. For everyone else at a normal beach, wear the neon.

The cheat sheet

Where	Skip	Wear
Pool	White, cream, pale blue, pastels; black/gray with caution	Neon pink, neon orange
Lake / river	Red, pink, white, blue, green, black, gray	Neon yellow, neon green, neon orange
Ocean	Navy, black, blue, aqua, white, busy prints	Neon yellow, neon green, neon orange
Kids, anywhere	Anything that blends in	Neon — plus a Coast Guard-approved life jacket

Sources

ALIVE Solutions Inc., swimsuit color visibility testing (pool and open water) — alive-solutions.com
"Swimsuit Visibility Tests Prove It: Pick Bright Colors for Safety," FOSS Swim School — fossswimschool.com
"Color test for kids' swimsuits shows best colors are neon," TODAY — today.com
CDC, Drowning Prevention: Facts and Data — cdc.gov/drowning
CDC Vital Signs, "Drowning Deaths Rise in the United States" (2024) — cdc.gov
Nathan Hart, Macquarie University, "Mick Fanning changes his surfboard colour from 'yum yum yellow'," The Conversation — theconversation.com
Florida Museum of Natural History, International Shark Attack File: Apparel Color — floridamuseum.ufl.edu