The national flag of Kingdom of Thailand since the year 2460 of the Buddhist Era; there are total of 3 colours:
Red represents the blood spilt to protect Thailand's independence and often more simply described as representing the nation.
White represents the religion of Buddhism, the predominant religion of the nation
Blue represents the monarchy of the nation, which is recognised as the centre of Thai hearts.
This file was derived from: Flag of Thailand.svg:
Flag_of_Thailand.svg: Zscout370
derivative work: Sodacan