complementary

Singapore has long been promoting the Riau Islands, which includes Batam, and the Malaysian state of Johor as "complementary" regions.

From BBC ● Oct. 12, 2026

Ukrainians also use Delta and complementary applications to improve situational awareness and protect their own troops.

From The Wall Street Journal ● Sep. 25, 2026

“It’s a way for them to to show a willingness to integrate within cities and to be more complementary rather than replacing,” Cornet said.

From Los Angeles Times ● Sep. 24, 2026

Neutron and X-ray imaging provide researchers with complementary ways to see inside materials.

From Science Daily ● Sep. 24, 2026

Vincent experiments with bright colors as well as complementary colors.

From "Vincent and Theo: The Van Gogh Brothers" by Deborah Heiligman

But just as much as complementaries, van Gogh loved using colors that are adjacent on the color wheel.

From Washington Post ● Mar. 12, 2019

This novel about young Ged’s education in both magic and self-understanding relies throughout on Taoist notions of complementaries — the balance between light and dark, speech and silence, self and shadow.

From Washington Post ● Oct. 3, 2016

In the same way mix the two complementaries yellow and blue to produce a gray; mix red and green in the same way.

From The Mind and Its Education by George Herbert Betts

For harmony, as well as for richness, the law of complementaries, in its most general application, is the safest of all guides, but it must be followed with fine discrimination.

From Architecture and Democracy by Claude Fayette Bragdon

Greenish-yellow and blue are a pair of complementaries, as already mentioned.

From Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6 "Cockaigne" to "Columbus, Christopher" by Various