The flag of Algeria consists of two equal vertical bands, green on the hoist side and white on the fly side. In the center of the flag, there is a red, five-pointed star within a red crescent centered over the two-color boundary. The aspect ratio of the flag is 2:3.

Color codes:

• Green: Pantone 347 C; RGB (0, 136, 85); CMYK (100, 0, 37, 47)
• White: No specific color code, it's just plain white
• Red: Pantone 485 C; RGB (239, 51, 64); CMYK (0, 95, 88, 0)

Geometric properties and measurements:

• The flag's height is twice its width (aspect ratio of 2:3).
• The green band takes up the hoist half of the flag, while the white band occupies the fly half.
• The red crescent has a radius equal to one-third of the flag's height, with its center at the intersection of the flag's centerline and the imaginary line joining the two corners of the white stripe adjacent to the green stripe.
• The five-pointed star inside the crescent is inscribed in a circle with a diameter equal to three-fourths of the width of the white band.

Note: The design of the Algerian flag was adopted on July 3, 1962, after gaining independence from France. The colors green, white, and red are traditional Islamic colors and were also used by the Algerian liberation movement.