Definition of "water-blue" [water-blue]

• A coal-tar color used in dyeing, and similar to soluble blue. It is principally used for dyeing cotton. (noun)

The Century Dictionary (Public Domain)

• "Two of the walls were fronted in diamondoid, filtering water-blue artificial light from the man-made lake that surrounded the hotel and conference center."
• "He seemed incapable of moving and squinted downward to see if his old comfortable Converse sneakers were buried in the nibbling water-blue carpet."
• "Searching the near distance with his eyes, Louis could find no sign of vegetation-green or water-blue."