Duke blue adjective 1noun 1forms 1 adjective1 •Of this dark blue shade. noun1 •A shade of dark blue associated with Duke University. Since 2009, this shade is also called Duke Navy Blue, and a lighter shade, Duke Royal Blue, is associated with Duke University's athletics programs.David wore blue jeans and a Duke blue shirt with collar buttons. He had an arm draped around Roberta's shoulders as we talked. — 2022 formsDuke blues
