The term 'blue color deep' can be represented by five different crossword solutions: INDIGO (6 letters), aqua (4 letters), TEAL (4 letters), AZURE (5 letters), and CYAN (4 letters). INDIGO is a deep, dark blue color that is often associated with royalty and luxury. Aqua is a lighter blue-green color that is often used to represent water. TEAL is a medium blue-green color that is often used in interior design. AZURE is a light blue color that is often used to represent the sky. CYAN is a bright blue-green color that is often used in printing.