Jyotish Shastra or Vedic Astrology refers to the study of movement of celestial objects and their influence on human life. Jyotish(ज्योतिष) literally means the study of light in Sanskrit and the light refers to the gleam of stars and planets.
As per Jyotish Shastra, each day of the week corresponds to a planet as well as gems and colours.
Monday (सोमवार) is ruled by Moon (चाँद). Moon corresponds to white, more specifically pearl white.
White colour signifies calmness and coolness and Moon is related to communication. Since calmness and coolness are both important in effective communication, it is great to wear white on Mondays.
To get the blessings of Moon, check out White Hakik Mala on sanatan.in
Also find out which colour you should wear on:
Sunday, Tuesday, Wednesday, Thursday, Friday & Saturday