The term 'relative of turquoise' can be described by three crossword solutions: TEAL (4 letters), nileblue (8 letters), and tealblue (8 letters). TEAL is a deep blue-green color, similar to turquoise. Nileblue is a shade of blue-green that is slightly darker than TEAL. Tealblue is a color that is a combination of TEAL and blue. All three colors are related to turquoise and can be used to describe the term 'relative of turquoise'.