In a medium bowl, combine sweet relish, mayonnaise, and crabmeat. Set aside.
On a 12-inch chilled platter, combine the 2 types of lettuce. Arrange tomato wedges around the perimeter of platter. Alternate the olives, bell pepper rings, and cucumber slices between the tomatoes. Spoon the crabmeat mixture into the center. Top with the quartered hard-boiled eggs arranged in a pinwheel fashion.