The flag of the Republic of the Congo has a ratio of 2:3, with a rectangular shape. It features three vertical stripes of green, yellow, and red, each of equal width. The green stripe is located on the hoist side (left-hand side), while the yellow stripe is in the middle, and the red stripe is on the fly side (right-hand side). The exact color codes for the flag are:

• Green: Pantone 355 C / RGB #00A74A
• Yellow: Pantone 116 C / RGB #FCD20F
• Red: Pantone 186 C / RGB #EF2B2D

There are no geometric properties or measurements specified for the flag.