What pink means here
Pink noise reduces power as frequency rises, so it often sounds less bright than white noise. Our sample is a 20-second generated loop. It is a texture choice, not music, a recording of rain or a sound tuned to a baby’s sleep stage.
Research does not establish a baby-sleep advantage
A 2026 laboratory study of 25 adults found that pink noise reduced REM sleep relative to a quiet control night under its tested conditions. That adult experiment does not tell us how this particular sample affects an infant. It also does not support an automatic claim that pink noise improves sleep.
Different experiments use different levels, noise environments and participants. There is no basis here to rank pink as the best color for every child. Use the comparison tool to hear a difference, not to diagnose or treat a sleep problem.
Compare without a volume chase
Start with the same device setting for each color. Switching here replaces the previous noise color and keeps the main volume unchanged. Natural differences in perceived loudness can remain even after digital level matching.
Pause remains available during a change. Keep the device away from the sleep space and choose a short time rather than assuming that a quieter-sounding color should run all night.
Sources and limits
These sources support the factual explanations. They do not endorse this site or certify a particular playback setup.
Sources checked October 10, 2026. Written for this project; no clinical review is claimed.