As you can see by the two images which one is the male and female, for the male poster, I have used a typical blue color as people say that blue is a male color.

This is a male advertisement poster for "Calvin Klein MAN" it uses a black and white color, which gives impact to the man behind the product. The light shines on the left side, also where the product is, they did this because they want the product to feel as important as the man.
This is a female advertisement poster for "DAVIDOFF Cool Water" the color is this one is much more clearer that the male advert, this time, it uses a light blue and white color, this is because light blue is more of a female color, also, the girl is looks to be sitting in water hence the product "cool water".