The tri-colours of the Estonian national flag are three equal horizontal bands. The top one is blue, the middle one black and the lower white.

The colors of the national flag are representative of Estonian history and folk costumes, as well as occurring in nature. The significance of the individual colors has been explained in various histories: blue is referred to as the color of faith, loyalty and devotion; it also reflects the qualities of the sky, sea, and lakes. Black is said to be symbolic of the dark past of suffering of the Traditionally Estonian peasantshave worn black jackets. White represents the striving towards enlightenment and virtue.