'Gerald Darby' iris (Iris x robusta): some of the foliage and the stems are purple. It's a siberian iris, so no beard. Flower is also purple. Water/bog iris, tubers are poisonous so handle with gloves.
Jacob's Ladder (Polemonium caeruleum): Likes shade or dappled sun. Purple-blue flowers are held high above the fern-like foliage on slender stalks, and bloom late spring to early summer (June-July? Spreads by self-seeding.