3) Navy blue Explanation: The-Ashoka Chakra is a depiction of the Buddhist Dharmachakra, represented with 24 spokes. The most visible use of the Ashoka Chakra today is at the centre of the National flag of the Republic of India (adopted on 22 July, 1947), where it is rendered in a Navy-blue colour on a White background, by replacing the symbol of Charkha (Spinning wheel) of the preindependence versions of the flag.