What is wavelength range of visible light?

The wavelength range of visible light for the human eye is approximately 380 to 750 nanometers (nm). This narrow band of the electromagnetic spectrum is often simplified to 400 to 700 nm in general contexts.

Within this range, we perceive different wavelengths as distinct colors. These are the spectral colors, traditionally broken down as violet, indigo, blue, green, yellow, orange, and red, known by the mnemonic ROYGBIV.

The transmission spectrum graph of visible light features a blue curve on a white background, clearly indicating high transmission across the approximate wavelength range of 380 to 750 nanometers. This visualization makes it easy to understand the spectral characteristics of light and how different colors are transmitted.