The flag of French Guiana features a blue background with a yellow triangle on the hoist side. The triangle has a black outline and contains a green, five-pointed star at its center. The aspect ratio of the flag is 2:3. The geometric properties of the triangle are not specified, but it appears to be an isosceles triangle with the base extending to the edge of the flag. There are no specified measurements for the flag, but the dimensions should maintain the 2:3 aspect ratio. The color codes for the flag are:

• Blue: Pantone 286 C / RGB (0, 35, 149) / HEX #002395
• Yellow: Pantone 109 C / RGB (255, 213, 0) / HEX #FFD500
• Black: Pantone Process Black C / RGB (0, 0, 0) / HEX #000000
• Green: Pantone 356 C / RGB (0, 143, 69) / HEX #008F45