The flag of Gabon consists of three horizontal stripes of equal width. The top stripe is green (Pantone 347 C), the middle stripe is yellow (Pantone 116 C), and the bottom stripe is blue (Pantone 286 C). The aspect ratio of the flag is 3:4, meaning its width is 3 units and its height is 4 units. There are no specific geometric properties or measurements beyond the equal width of the stripes and the aspect ratio.