The flag of Wallis and Futuna is a simple design with three horizontal stripes and the French Tricolor in the top left corner. The aspect ratio of the flag is 2:3.

Colors and their respective color codes are as follows:

1. Blue (top stripe): Pantone 286 C; Hex #0033A0
2. White (middle stripe): Pantone White; Hex #FFFFFF
3. Red (bottom stripe): Pantone 186 C; Hex #E20A17

The French Tricolor in the canton has three vertical stripes of blue, white, and red as well. The same color codes apply for these stripes as mentioned above.

Geometric properties and measurements:

1. The flag is divided into three equal horizontal stripes with each stripe occupying 1/3 of the total height.
2. The French Tricolor in the canton covers half the height of the blue stripe and extends to 1/3 of the flag's length.

No further information about specific measurements is provided, as these would depend on the actual size of the flag being produced.