Answer: Light blue, dark blue, and violet are the highest in energy.
Step-by-step explanation: The visible light spectrum describes wavelengths of light in nanometers. The wavelength is the distance from one peak of the wave to another. The longer the wavelength, the lower frequency the light will have. Therefore, the longer the wavelength, the lower the energy, as the wave is moving at a slower frequency. The visible light spectrum varies from red (740-625 nm), orange (625-590 nm), yellow (590-565 nm), green (565-520 nm), light blue (520-500 nm), dark blue (500-435 nm), to violet (435-380 nm). As one can see, the wavelength gradually decreases from red to violet. Shorter wavelength=higher frequency. Therefore, colors at the end of the visible light spectrum (light blue, dark blue, violet), are the highest in energy, because they have the shortest wavelengths and highest frequencies.
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