The term 'greenish blue color' can be described by three different crossword solutions: CYAN (4 letters), TEAL (4 letters), and aqua (4 letters). CYAN is a bluish-green color that is often used in printing and design. TEAL is a deep blue-green color that is a combination of blue and green pigments. Aqua is a light, bright greenish-blue color that is often used in interior design. All three colors are considered to be part of the greenish blue color family.