One of my favourite colour combinations with flowers is red and purple.
In my part of the world oriental poppies and bearded iris bloom around the same time and thus make a pretty pairing.
I like this combination in tulips too.
Or red tulips with other purple flowers such as primulas or honesty.
The beautiful fuchsia plant knows that purple and red is a stunning combination.
If I ever get married again, my bouquet will have these flowers in it. So stunning.