complementary
US /ˌkɑːm.pləˈmen.t̬ɚ.i/
UK /ˌkɑːm.pləˈmen.t̬ɚ.i/

1.
saling melengkapi, pelengkap
combining in such a way as to enhance or emphasize each other's qualities
:
•
The two colors are complementary and look great together.
Kedua-dua warna itu saling melengkapi dan kelihatan hebat bersama.
•
Their skills are complementary, making them a strong team.
Kemahiran mereka saling melengkapi, menjadikan mereka pasukan yang kuat.