To create a sharp contrast in a composition, which type of colors should be used

very interesting question. i'm a guy, so my vote hardly matters, but blue according to my wife is a purple with more blue than red.

the "brown"   is not mauve. that's the tough one. it has more brown the mauve in it. you almost need a color wheel to tell or a paint sample book. her gloves are a deeper purple.

i would also qualify this by saying you need say how good your monitor is. i'm working with a lap top so i couldn't swear by anything i've written is accurate. i had 3 women offer an opinion. they were not in agreement and they were not certain.

for posting. i'm more of a math type so i'm staying out of this but it was lots of fun.

in my opinion, and this only my opinion, not everything needs to have two people kissing to be romantic. yes it , but why do we have to have people kissing, and long walks on the beach for it to be romantic? yes, these are common characteristics of romantic, but we need to look beyond that.