Flag of Netherlands
|Design||A horizontal triband of red (Bright Vermilion), white, and Cobalt blue. |
Variants of the flag have been in use since 1572, and in 1937 the flag was officially formalized as the national flag of the Kingdom of the Netherlands. It is the oldest tricolor flag still in national use. 
The colors were those of William I, Prince of Orange, who led the Dutch Revolt against Spanish sovereignty in the latter half of the 16th century. Originally the upper band was orange, but because it tended to fade to red over time, the red shade was eventually made the permanent color.