Jennie's garden has some rich dark flower combinations. Here verbena bonariensis creates a backdrop for thalictrum delavayi.
The stems of the dainty thalictrum are the same colour as the flowers on the verbena.
It was hard to photograph but these purples are set against the almost black foliage of Sambucus nigra 'Black Lace' - to the right at the back....
Heuchera, astrantia, Cosmos atrosanguineus and a jewel like ruby knautia; black hollyhocks in waiting, the darkness alleviated by the dangling flowers of the pale dierama.
My own favourite - geranium 'Dragonheart' with scabious 'Chile Black' - sumptuous!
Do you have any dark stars in your garden?