What's the color of the sky?
The color of the sky on Earth is blue. Specifically, Rayleigh scattering causes light at around 474-476 nm to bounce around the most in the atmosphere, followed by other colors. The result is blue mixed with white light to give a desaturated light blue color.
Thank you for the explanation. Does this also apply to other planets in the solar system?
The color of the sky on other planets in the solar system can be quite different from the color of Earth's sky due to differences in atmospheric composition and other factors.

For example, on Mars, the sky appears pinkish-red during the day due to the presence of fine dust particles in the atmosphere that scatter sunlight in a way that makes the sky look reddish.

On Venus, the thick atmosphere causes the sky to appear yellowish-white, and the clouds in the upper atmosphere reflect a significant amount of sunlight, making the planet one of the brightest objects in the sky.

On Jupiter and Saturn, the atmosphere is primarily composed of hydrogen and helium, and the sky appears mostly blue due to the scattering of sunlight by the molecules in the atmosphere.

Overall, the color of the sky on a planet depends on various factors, such as the composition and density of its atmosphere, the presence of clouds and dust, and the position of the planet relative to its star.
Thanks for the great reply. I do understand now that the sky color depends on which wave lengths get disturbed or reflected.