The colors of rubies and emeralds are so striking that they define shades of red and green—ruby red and emerald green. But ...
Complementary colors live on opposite sides of the color wheel. Imagine red and green, blue and orange, or yellow and purple. Or move a half step over on the wheel, and combine a yellow-green color ...
Add color to a lower-light spot with this compact fern, whose glossy fronds grow in shades of green, red, and copper. More ...