The flag of Namibia has a rectangular shape with an aspect ratio of 2:3. It is divided diagonally from the lower hoist-side corner to the upper fly-side corner by a white stripe, with a blue triangle at the hoist and a green triangle at the fly. The blue triangle represents the sky and the Atlantic Ocean, while the green triangle symbolizes the land and vegetation of Namibia. The top-left corner of the triangle contains a sun with 12 rays in red, which represents life and energy. The colors used in the flag are defined as follows:

• Blue: Pantone 280 C / RGB (0, 63, 135) / CMYK (100, 65, 0, 47)
• Green: Pantone 362 C / RGB (0, 153, 0) / CMYK (86, 0, 100, 0)
• Red: Pantone 186 C / RGB (255, 38, 0) / CMYK (0, 100, 93, 0)

The dimensions of the flag vary depending on its intended use, but the standard sizes are 135 cm x 90 cm (54 inches x 36 inches) for the outdoor flag and 90 cm x 60 cm (36 inches x 24 inches) for the indoor flag. The flag was adopted on March 21, 1990, when Namibia gained independence from South Africa.