Ordinary Passport : An ordinary passport is navy blue in color and is issued for ordinary travel or business trips.
Diplomatic Passport : The cover of a diplomatic passport is maroon in color. It is issued only to Indian diplomats, diplomatic couriers or top-ranking government officials.
Official Passport : Apart from the navy blue and maroon passports, the Indian government also issues a white-cover passport to individuals who are representing the Indian government on official business.
All the Indians who travel for everyday purposes apply for an ordinary passport however government workers who are being sent overseas on official business apply for Diplomatic or official passport service according to the need.