EM Spectrum
Blue Light (470 nm)
638.0 THz
Cosmic Octave Color
Blue (470 nm)
Display swatch #1e9dff
Octave-shifted: 18.6 kHz (-35 octaves)
EstablishedPhysical Measurement
Evidence Level
Established
Source Count
1
Last Reviewed
March 23, 2026
Directly measured, standardized, or well-supported in mainstream scientific or technical literature.
This entry documents a measurable or standardized frequency reference. The atlas is a research and practice guide, not a medical diagnostic instrument.
Review the evidence modelBlue visible light at ~470 nm. Blue light suppresses melatonin production and affects circadian rhythms. Used in SAD light therapy.
Claim Type
Physical Measurement
Traditional Color
Blue
Cosmic Octave Color
Blue (470 nm) · #1e9dff
Source
Optics
Sources
Optics and Physics References
4 atlas references
Used for visible-light wavelengths, electromagnetic ranges, and general physics conversions.
Optics, physics, and electromagnetic-spectrum references.
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visible-lightem-spectrumcolorblue