I'm 5'7" and 155lbs with a 30" waist, and these pants fit quite well.  They are definitely cut slim, and there is not a whole lot of room in the thighs, especially when sitting down, but they are very comfortable when standing.  Materials are 80% polyester and 20% rayon, so these pants are fairly wrinkle resistant and drape nicely.  Navy color is very dark, almost black.