Vice-Admiral of the Blue was a senior rank of the Royal Navy of the United Kingdom, immediately outranked by the rank Vice-Admiral of the White (see order of precedence below).

The command flag for a Vice-Admiral of the Blue is pictured opposite.

[3] The Vice-Admiral of the Blue was a senior rank of the Royal Navy of the United Kingdom, immediately outranked by the rank Vice-Admiral of the White (see order of precedence below).

[5] The Navy was divided into three squadrons Red, White and Blue in order of seniority.

Ships of the Royal Navy flew the Ensign that coincided with the squadron of their commanding officer.