The flag of Macau has an aspect ratio of 2:3. It features a green field with a white lotus flower above a stylized Governor Nobre de Carvalho Bridge and water in white, beneath which is a golden five-pointed star. The color codes for the flag are:

1. Green (Pantone 342 C): #006847
2. White: #FFFFFF
3. Gold (Pantone 123 C): #FDCB00

The flag does not have specific geometric properties or measurements beyond its aspect ratio.