Flag of Thailand next to each side of the deep blue stripes, and the red stripes being 1 part wide next to each side of the white stripes. The National Flag shall also be called the Tri-Rong flag". The colours of the flag were standardised in an announcement of the Office of the Prime Minister dated 30 September 2017, on the occasion of the 100th anniversary of its adoption. It gives recommended values for determining the standard colours of physical cloth flags, defined in the CIELAB colour space under Illuminant D65 as follows (also included are corresponding RGB, HEX, and CMYK values as
Flag of Thailand Flag of Thailand The flag of the Kingdom of Thailand (; , meaning 'tricolour flag') shows five horizontal stripes in the colours red, white, blue, white and red, with the central blue stripe being twice as wide as each of the other four. The design was adopted on 28 September 1917, according to the royal decree issued by Rama VI that year. Since 2016, that day is a national day of importance in Thailand celebrating the nation's flag. The colours are said to stand for nation-religion-king, an unofficial motto of Thailand, red for the land and people, white for religions