Actually my underarm is a bit dark..i mean the color of it is light brown brown.do you think it is dark?

I mean my complexion is white(not so white)... and i have this LIGHT BROWN colored underarm... and im afraid to wear sleeveless bec. y complexion is not equal.Do you think guys I have a dark underarm?and for you what is dark underarm?...How can you say that people has it?