There are several options that complement black marble countertops:

1. White subway tile: This classic option creates a clean and modern look.

2. Grey or silver mosaic tile: This option adds a subtle touch of shimmer and texture while complementing black marble.

3. Stainless steel: A stainless steel backsplash enhances the sleek and modern look of black marble countertops, giving an industrial vibe.

4. Bold colored tiles: Adding a dramatic color like blue or green can add visual interest to the kitchen and bring out the veining in the black marble.

5. Natural stone: Pairing black marble countertops with a natural stone backsplash, such as limestone or travertine, creates a cohesive and elegant look.