The flag of Chad consists of three vertical stripes of equal width. The colors and their respective HEX codes are:

1. Left stripe: Blue (#002664)
2. Middle stripe: Yellow (#FECB00)
3. Right stripe: Red (#C60C30)

The aspect ratio of the flag is 2:3, meaning that it is twice as long as it is tall. Geometrically, the flag can be described as a rectangle divided into three equal columns, each filled with one of the aforementioned colors.

There are no additional symbols, measurements, or geometric properties beyond the tricolor design and aspect ratio.