In a large mixing bowl, combine the crab meat, diced celery, red bell pepper, and red onion.

In a separate bowl, whisk together the mayonnaise, lemon juice, dill, salt, and black pepper.

Pour the dressing over the crab mixture and gently fold until well combined.

Chill in the refrigerator for at least 30 minutes before serving.

Serve on a bed of lettuce or in a sandwich.