The term DARK BLUE GRAPE can be summarized as MERLOT, a type of red wine grape variety. Merlot is a dark blue-colored grape that is widely grown in France and other parts of Europe, as well as in the United States, Australia, and New Zealand. It is known for its soft tannins and full body, making it a popular choice for blending with other varieties. Merlot is also used to make varietal wines, which are made entirely from the grape variety.