<Tr> <Th> Design </Th> <Td> A horizontal triband of India saffron, white, and India green; charged with a navy blue wheel with 24 spokes in the centre </Td> </Tr> <Tr> <Th> Designed by </Th> <Td> Pingali Venkayya </Td> </Tr> <P> The National Flag of India is a horizontal rectangular tricolour of India saffron, white and India green; with the Ashoka Chakra, a 24 - spoke wheel, in navy blue at its centre . It was adopted in its present form during a meeting of the Constituent Assembly held on 22 July 1947, and it became the official flag of the Dominion of India on 15 August 1947 . The flag was subsequently retained as that of the Republic of India . In India, the term "tricolour" (Hindi: तिरंगा, translit . Tiraṅgā) almost always refers to the Indian national flag . The flag is based on the Swaraj flag, a flag of the Indian National Congress designed by Pingali Venkayya . </P> <P> By law, the flag is to be made of khadi, a special type of hand - spun cloth or silk, made popular by Mahatma Gandhi . The manufacturing process and specifications for the flag are laid out by the Bureau of Indian Standards . The right to manufacture the flag is held by the Khadi Development and Village Industries Commission, who allocates it to regional groups . As of 2009, the Karnataka Khadi Gramodyoga Samyukta Sangha has been the sole manufacturer of the flag . </P>

What is the circle on the indian flag