No, the black doesn’t soften the room. It defines it. A dog asleep, drawn in fine pencil on clean white, is quiet subject matter with a firm graphic edge, and that edge is what your wall picks up. Put it up and the room gets sharper: white space reads as light, the dark fur gives your eye somewhere to land, and everything around it looks more deliberate. Hang it at eye level above a sofa, sideboard or writing desk, or use it to break up a long hallway. Pair it with linen, leather, black metal and pale or dark wood. Don’t crowd it with busy pattern or heavy colour on the same wall the white ground needs room to breathe. Printed on premium fine-art paper, unframed or framed in real wood.