White, pink, or brown noise: which actually helps you sleep?

If you've ever fallen asleep to a fan, you already know the basic trick: a steady, featureless sound masks the sudden noises — a door, a car, a snoring partner — that yank you out of light sleep. But not all background noise is the same, and the differences have actual names borrowed from light: white, pink and brown noise.

The three colours, quickly

• White noise — equal energy across all frequencies. Bright and hissy, like TV static or a hairdryer. Great at masking, but some find it harsh.
• Pink noise — more energy in the lower frequencies, less in the highs. Softer and more balanced, like steady rain. Often the easiest to fall asleep to.
• Brown noise — even heavier on the low end. Deep and rumbly, like a distant waterfall or strong wind. Calming for people who find white noise too sharp.

What the research suggests

Studies on noise and sleep are still small and mixed, but a few themes hold up. Continuous broadband noise can help people fall asleep faster in noisy environments, and some research links pink noise to deeper, more stable slow-wave sleep. The honest takeaway: the effect is real for many people, individual, and worth experimenting with rather than treating as a guaranteed cure.

How to choose yours

Start with pink noise if you're unsure — it's the crowd-pleaser. Switch to brown if it feels too bright, or white if you need maximum masking in a loud space. Better yet, mix a noise with a natural texture like rain or ocean so it feels less mechanical.

That mix-and-match approach is exactly what LumaSleep is built for: a deep library of noises and natural soundscapes, plus an AI studio that can generate a custom sound from a sentence — so you can dial in the exact texture that puts you under.