Pink Noise vs. Brown Noise vs. White Noise: What’s the Difference?

A modern sleep sound machine on a nightstand representing white, pink, and brown noise frequencies

If you have spent any time on TikTok, YouTube, or sleep forums lately, you have probably noticed a massive trend. People aren’t just talking about “white noise” anymore. Suddenly, everyone is obsessing over “pink noise” for deep sleep or claiming that “brown noise” is the ultimate hack for ADHD and deep focus.