The flag of Switzerland is a square-shaped design consisting of a red field with a white Greek cross centered within it. The aspect ratio of the flag is 1:1, and the geometric properties of the cross are such that each arm of the cross measures one-sixth longer than its width. The color codes for the flag are defined as Pantone 485 C for the red and Pantone White C for the white. The exact measurements of the flag can vary, but common sizes include 21x21 inches, 35x35 inches, and 47x47 inches.