The national flag of Bolivia is described as a tricolor rectangle, with the colors red, yellow and green, in a ratio of 1:1:1, meaning three horizontal bands, with the red on the superior part occupying a third of the flag's width, yellow in the middle band using the same width, and green in the inferior part, using the last third.

The first description of Bolivia's national flag, together with the significance of these, were first established by the Supreme Decrete of 1888 during the government of President Gregorio Pacheco.