Although the color of the sky is blue, when clouds are seen in the sky, the question arises in our minds about its color. Why do clouds look white? Also why doesn't the color of the clouds look white all the time? What causes the clouds to turn black? In other words, the question arises in our minds, why the color of the clouds is black and white? What is the explanation? We can see an object only when light is reflected in our eyes. An object that does not reflect light after it has been illuminated is an object we see as black. The same is true of clouds. When light falls on the clouds and the light is reflected from our eyes, we see the clouds as white. Again when the light falls on the cloud and the light is not reflected from it then we see the color of the cloud as black or gray. Clouds are made up of many water particles. Water droplets are a very small form of water that we cannot see with the naked eye. But if many particles are together then we can see it in the form of a cloud. Temperatures far above the sky are much lower than on Earth, so some water droplets become ice. Sunlight is reflected and reflected in these icy water droplets. Which makes us think the color of the clouds is white. Occasionally and during rains these water droplets become quite heavy and they no longer remain in the form of clouds but fall in the form of rain. And then the density of the water particles increases so much that even sunlight cannot come through them. That is, reflection or refraction does not occur under normal rules. So then the color of the clouds seems to us to be black or gray.