Image from https://weddingtips101.files.wordpress.com/2014/01/dark-blue-flowers.jpg.
Flowers by color! So nice for wedding planning!
TB Iris germanica 'Into the Night' (Schreiner, 1989)
Bunga Iris (Neomarica longifolia)
Tall Bearded Iris Flowers | ... night dress tall bearded iris repinned from flowers by lucille otto
Iris "Long Embrace"
* apparently no link -- try following pics to make this pretty flower
Anderson Iris Gardens--I generally don't like green flowers because they aren't that different from leaves. This iris is pretty though, if it hasn't been colorized.
BEARDED IRIS 'SEA POWER': Midseason bloomer, sweet scent, from Schreiner's Iris Gardens.
Line design example