The ratio of the flag is 1:2. 
On a flag of 60 units by 120 units:
Each stripe is 20 units tall.
The star and crescent are contained in a rectangle of 18 by 24 units, centered on both axes.
The outer circle of the crescent has a diameter of 18 units, while the inner circle of the crescent has a diameter of 15 units. Both circles are centered on the y-axis.
The distance between the centers of the circles is 2 units.
The star is 8-pointed and centered on the y-axis. 
The outer points of the star touch the circumference of a circle of 10 units, centered on the y-axis.
The inner points of the star touch the circumference of a circle of 5 units, centered on the y-axis.
The colors are defined in the Pantone Matching System as follows:
Blue: Pantone 313 C (#0092BC)
Red: Pantone 185 C (#E4002B)
Green: Pantone 3405 C (#00AF66)

Sources for construction sheet and colors: [1] and [2]
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