The flag of Dominica features a green background with a centered cross in yellow outlined in black, dividing the flag into four quarters. The top and bottom quarters are red; the left and right are black. The dimensions of the flag have an aspect ratio of 3:5. The height of the cross is 2/5 of the height of the flag, and its arms' width is 1/10 of the flag's height. The color codes for the flag are:

• Green: Pantone 342C
• Yellow: Pantone 116C
• Black: Pantone Black C
• Red: Pantone 186C

There are no specific geometric properties or measurements required for the flag.