White colour is the lightest color and is achromatic because it fully reflects and scatters all the visible wavelengths of light. White is the color of fresh snow, chalk and milk, and is the opposite of black.
Snowfall when I used to study in Nottingham...Uk
Chalk is also white in colour. Chalk is soft, white, porous, sedimentary carbonate rock, a form of limestone composed of the mineral calcite. Chalk is used in school and college to write on board to teach student