Green-blue is a color that is often difficult to describe, as it falls somewhere between the two hues. There are several synonyms that can be used to describe this shade, including aquamarine, teal, turquoise, and cyan. Aquamarine is a pale green-blue tone that is reminiscent of the sea. Teal is a darker, richer green-blue color that is often used in interior design. Turquoise is a bright, vibrant shade of blue-green that is often associated with jewelry and gemstones. Cyan is a pure blue-green hue that is often used in digital design and printing. No matter which synonym you choose, green-blue is a beautiful and versatile color that is sure to make a statement.