black suit, black shirt would be ok with it. black shirt with dark grey suit would be good too. dark and dark contrast won't normally work but this one has a strong color so it needs to be balanced off by equally strong color unless u want it to really stand out.
That is one of the easiest ties to combine. Dark suit black or navy, especially blue shirt that goes very well with red and yellow and itÂ´s very " american " as I see that combo in a lot of movies. Some grey suit with pink shirt might work. No black shirts with ties please!!