I know it sounds "different", but a graphite/charcoal grey looks fabulous with a graduated coral color palette. I'd recommend 3 shades of coral, with the grey as an elegant anchor shade. In addition to being sophisticated, the grey is softer than black. For additional depth, a bright fern green can be included in the all the floral accents.
You can go a few ways that would all look wonderful.
#1 Leave Coral as your only color, and build a black and white or black and ivory wedding around it.
#2 A Warm Pallet, coral, yellow, and champagne punctuated by dark browns. This will also set off any greenery and really make a white dress pop.
#3 A contrasting color scheme, using a color wheel one of the most complementary colors to coral are shades of turquoise and blue. However, this theme may look too tropical.
#4, Still using coral as your base shade, go a few tones lighter and darker, then adding natural greens as an accent. This would look fantastic with a wedding party in black tuxedos and you in a white dress.
I hope this is helpful, best wishes on your upcoming wedding!