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Which visible color has the shortest wavelength?

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A horizontal gradient bar displays the visible light spectrum from violet to red, labeled with corresponding frequency in terahertz, wavelength in nanometers, and photon energy in electron volts. — light When white light is spread apart by a prism or a diffraction grating, the colours of the visible spectrum appear. The colours vary according to their wavelengths. Violet has the highest frequencies and shortest wavelengths, and red has the lowest frequencies and the longest wavelengths.

In the visible spectrum, violet light has the shortest wavelength.12

While the visible range is generally cited as approximately 400 to 700 nanometres, violet light occupies the lower end of this range, typically between 380 and 450 nanometres. Because wavelength is inversely proportional to frequency and energy, these shorter wavelengths correspond to higher frequencies and higher energy levels compared to other colors in the visible spectrum. Wavelengths shorter than those of violet light fall into the ultraviolet radiation region, which is not discernible to the human eye.12