The primary color of the sun's light is considered to be white. While we often perceive the sun's light as yellow during the day, largely due to the scattering of shorter blue wavelengths in the atmosphere, sunlight consists of a spectrum of colors that, when combined, appear white. This phenomenon can be observed during midday when the sun is high, illuminating the sky with a clearer white light. The white light is essential for photosynthesis in plants and impacts various biological processes on Earth, making it vital for sustaining life.