White, Pink or Brown Noise: Which Is Best for Sleep?

By Health Camper · October 2026 · 5 min read

Search for sleep sounds and you'll meet a whole rainbow: white noise, pink noise, brown noise, even "green" noise. Here's what the colours actually mean, and why the best one is mostly a matter of taste.

The colours, in plain words

White noise spreads its energy evenly across all frequencies. To our ears that sounds bright and hissy — like a detuned radio or a fan on high.

Pink noise turns down the high frequencies a little. It sounds softer and more natural: steady rain, wind through leaves.

Brown noise (sometimes called red noise) turns them down even more. It's a deep, low rumble — a waterfall in the distance, the inside of a plane, the roar of a campfire from a few steps away.

Is one colour scientifically better?

Not in any proven way. Most sleep research has used white or broadband noise, and even there the overall evidence is modest (a 2021 review in Sleep Medicine Reviews called it weak). Pink noise gets attention from lab studies that play short, precisely timed sound pulses during deep sleep — but that is a very different thing from leaving pink noise on all night. Brown noise became famous on social media, not in the lab: lots of people love it, but there's little direct research on it yet.

What all of them share is the useful part: a steady sound that masks sudden noises like traffic, doors and voices.

How to choose yours

Choose by ear, not by hype. If high, hissy sounds bother you, start deep (brown). If you need to cover voices or a TV next door, a brighter sound (white or pink) masks speech better. If "noise" feels artificial, try a natural texture like rain — it behaves a lot like pink noise. Whatever you pick, keep the volume low and try it for a few nights before deciding.

"The best sleep sound is the one you stop noticing."

Everyday wellbeing information, not medical advice. If sleep problems last most nights for more than a month, or you snore loudly or stop breathing at night, please talk to a doctor.