The phrase "natural complement" refers to something that perfectly completes or pairs with something else in a very natural and fitting way. It means that both things go together perfectly, like they were made for each other. Full definition
Mario Kart and F - Zero have always felt like natural complements to each other — the former built around tight, jostling, multiplayer combat races and intricate tracks, while the former opts for pure speed and racing skill over much larger environments — but it transpires that 1992's Super Mario Kart was actually planned as a multiplayer prototype of F - Zero. (gamesradar.com)
This lovely Lolly crib highlights the room with spindle slats and spindle legs in Natural complemented with frame in Grey. (simplybabyfurniture.com)
Working smarter not harder by discovering natural complements to the work already being done enhances outcomes. (txascd.org)