White vs Pink vs Brown Noise: Which Is Best for Sleep?

White, pink and brown noise are everywhere in the world of sleep, but what actually sets them apart, and which is best for rest? These ‘colours of noise’ are real, defined categories of sound, each with a different character and a different feel. Here is a clear, honest guide to the three, so you can find the one that suits you.

What Are 'Colours' of Noise?

The colours of noise describe how a sound’s energy is spread across high and low frequencies, much as colours of light describe the spectrum.

All three contain a whole range of frequencies blended into a steady, continuous wash, but the balance differs, and that balance is what gives each its distinctive sound, from hissy and bright to deep and rumbling.

White Noise

White noise contains all frequencies at equal intensity, which makes it sound bright, full and slightly hissy, think of radio static, a fan, or an untuned TV. Because it covers the whole range so evenly, white noise is a powerful masker, excellent at covering up sudden background sounds.

Some people find it wonderfully effective for blocking noise; others find its bright, high-frequency hiss a little harsh for sleep.

Pink Noise

Pink noise has more energy in the lower frequencies and less in the highs, making it softer, deeper and more balanced to the ear, much like steady rainfall or wind through trees. Many people find it gentler and more natural than white noise.

Pink noise is also the most studied of the three for sleep: some research suggests it may support deeper, slow-wave sleep, which we explore in our guide to pink noise and deep sleep.

Brown Noise

Brown noise (sometimes called red noise) has even more low-frequency power, giving it a deep, rich, rumbling quality, like a waterfall, heavy surf or distant thunder. It has become hugely popular lately, with many people finding its deep tone especially soothing and grounding, and some finding it helpful for focus.

We look at it closely in our guide to brown noise.

Which Should You Choose?

Here is the honest answer: the best colour is largely the one you find most pleasant, so it is well worth trying each. As rough guidance, pink noise has the most research behind it for sleep and suits those who want something soft and natural; brown noise suits those who love a deep, soothing rumble; and white noise suits those who need the strongest possible masking of outside sound.

There is no universally ‘best’ colour, only the one that settles you.

An Honest Bottom Line

Whatever their differences, all three colours work in much the same way: by laying down a steady, unchanging sound that masks disruptive noise and gives the mind something soothing to rest on.

The evidence is most promising for pink noise, and thinner for the others, but for everyday rest, what matters most is simply which sound helps you relax. Trust your own ears over the labels.

Listen on Spotify

Prefer your calm in a gentler, more musical form? Our soundscapes wrap soothing, natural-feeling sound, much like soft rain or rolling waves, into something beautiful to drift off to. Press play and find your colour of calm.

White, pink and brown noise are simply three shades of the same soothing idea: a steady wash of sound to quiet the world and calm the mind. Try each, notice which one settles you most deeply, and let your favourite colour of noise become a faithful companion on the way to rest.