The flag of South Africa has a rectangular shape with an aspect ratio of 2:3. It consists of two horizontal bands of equal size, the top band is bright red (#F8222D) and the bottom band is navy blue (#0072C6). In the center of the flag, there is a green-Y shaped symbol that divides into three parts at the top, forming a V-shaped pattern towards the edges. The green color used for this symbol is a mix of yellow and black (#F7D417). Each of the Y-shaped sections has a different color: black (#000000) on the left, white (#FFFFFF) in the middle, and red (#1D1D1B) on the right.

The geometric properties and measurements of the flag are as follows:

• The height of the flag is 1.5 times its width
• The width of the flag is 900mm (35.4 inches)
• The height of the flag is 1350mm (53.15 inches)
• The diagonal length of the flag is approximately 1620mm (63.78 inches)

The design and colors of the current flag were adopted on April 27, 1994, after the end of apartheid and the first democratic elections in South Africa.