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 the Netherlands the national coat of arms on the white stripes. From the same period dates the custom, prescribed spontaneously by popular will, to fly an orange pennant together with the national flag as a sign of allegiance of the people to the House of Orange. The pennant is added on King's Day (Dutch: "Koningsdag", April 27) or other festive occasions related to the Royal Family. On February 19, 1937, a Royal Decree issued by Queen Wilhelmina finally laid down the red, white and blue colours as the national flag (heraldic colours of bright vermilion, white and cobalt blue). The flag of