The flag of Chile has a rectangular shape with a ratio of 2:3 (width to length). It is divided into two equal horizontal bands, with the top band being white and the bottom band being red. The shade of red used is called "Chilean red" and has the color code #d52b1e in the RGB color model.

The flag's geometric properties include a total area of 62,660 square centimeters and a width of 1 meter and 33 centimeters. The blue canton in the upper-left corner of the flag contains a white five-pointed star in the center, which has a diameter of 2/5ths of the canton's height.

Overall, the geometric and color design of the Chilean flag conforms to strict standards set forth by the country's government, including the precise measurements of each element and the exact shade of red used.