The flag of Sudan has a horizontal tricolor design with stripes in red, white, and black, and a green triangle on the hoist side. The aspect ratio is 1:2.

Colors (Pantone):

• Red: 186 C
• White: Safe
• Black: Process Black C
• Green: 355 C

Geometric properties:

• The red, white, and black stripes are equal in width, each occupying one-third of the flag's height.
• The green triangle is an isosceles triangle with its base along the hoist side and its apex at the center of the flag. The length of the base is equal to half the flag's height, and the altitude from the base to the apex is equal to half the flag's width.