Bridesmaid bouquet - simple and inexpensive.  Bride's bouquet could incorporate white hydrangeas.

Like the shape, maybe have a lighter colour purple. Same idea for bride bouquet but bigger and possibly with cream hydrangea or peonies

garden tones hydrangea bridal bouquet

30 Totally Breath-taking Ways To Use Ombre Wedding Flowers

For the bridesmaids - Lovely spring garden tones; hydrangea, alstroemeria, callas, roses, can't tell what else is back there but this bouquet makes me want to see the bride!