This yarn is Poema from Laines du Nord, 100% merino wool, with 654 yards/ 150g ball.  The colorways are dyed so that you get a gradually changing.

The Poema may knit up a bit heavier than usual fingering weight yarns, though it has a very similar yardage to weight ratio. 

This colorway is #402 Maroon/Black:   It runs from a black into a rich raisin into a maroon.