Flag of India standard IS:1803-1973. Note that the values given in the table correspond to CIE 1931 color space. Approximate RGB values for use may be taken to be: India saffron #FF9933, white #FFFFFF, India green #138808, navy blue #000080. Pantone values closest to this are 130 U, White, 2258 C and 2735 C. Gandhi first proposed a flag to the Indian National Congress in 1921. The flag was designed by Pingali Venkayya. In the centre was a traditional spinning wheel, symbolising Gandhi's goal of making Indians self-reliant by fabricating their own clothing. The design was then modified to include a white stripe
Ashoka three colours, Saffron, White and Green with the Ashoka Chakra was selected. Ashoka is often credited with the beginning of stone architecture in India, possibly following the introduction of stone-building techniques by the Greeks after Alexander the Great. Before Ashoka's time, buildings were probably built in non-permanent material, such as wood, bamboo or thatch. Ashoka may have rebuilt his palace in Pataliputra by replacing wooden material by stone, and may also have used the help of foreign craftmen. Ashoka also innovated by using the permanent qualities of stone for his written edicts, as well as his pillars with Buddhist symbolism.