Flag of Belgium

As the above picture of the Belgium Flag indicates the background is tri-color - Black, Yellow and Red

The description of the Belgian Flag is as follows:

Three equal vertical bands of black (hoist side), yellow, and red

According to Ancient and Heraldic traditions much symbolism is associated with colors. The colors on the Belgium flag represent the following:

Yellow - a symbol of generosity

Red - hardiness, bravery, strength & valour

Black - Determination