It was common practice during the latter half of the 1800s for women's clothing to be made up in multiple fabrics. The simplest, and most often utilized version of this idea was to pair a textile with a strong pattern with a solid colored one.
The 1880s was a period when the bustle made its second, (and final) appearance as a major fashion. Designers have repeatedly referred to it since, but it has never gained the broad acceptance it had.
The blue silk draping is a large pleated swag on the left of the skirt, and a similarly sized pouf of material on the right, both disappearing under the huge panel of the blue on the center back. The front of the skirt has an off center gathered tab of fabric that is brought together at the bottom with matching silk ribbons.
This sort of dress would have been perfectly acceptable for both at home entertaining, or for going out shopping, or visiting. It is also, in styling just fashionable enough, without being overly so that it would have been met with smiles by a broad range of people. It communicates a certain affluence, without being loud about it.