The color of Uranus is generally blue. Why blue? Well if you remember the Sun gives off all the colors on the spectrum, Uranus is able to absorb all the colors except blue which it instead reflects which gives it the bluish color we see. But why can’t it absorb the color blue. Uranus’s clouds are composed of methane which does not absorb the blue color from the Sun’s spectrum. Earth is the other planet that has blue color, but that is because of the water.