I've frequently seen talk of monochromatic outfits on fashion forums, style blogs and pinterest, but I also love analogous combinations. There's just a bit more depth to them. Here are my most recent ones.
A varieties of blues in the green direction. The brown belt adds a hint of contrast.
On the other side of blue spectrum toward purple. Silver accents keep things cool.
Finally, a truly monochromatic look with shades of burgundy.