No, the sky is generally not magenta.
Our sky's color primarily results from a phenomenon called Rayleigh scattering. According to research, the shorter blue wavelengths of light are scattered more effectively by the atmosphere's particles. This scattered blue light is what we predominantly see when we look up during the day. That is why our sky appears blue because of all the scattered blue light.
Therefore, because blue light is scattered throughout the atmosphere, it gives the sky its characteristic blue color. While the sky can exhibit other colors during sunrise and sunset, it's almost never magenta.
