How to Make Navy Blue With Food Coloring

Food coloring is a manmade pigment regulated by the U.S. Food and Drug Administration. According to the FDA, only nine certified colors are approved for use in food in the United States. Blending selections of the nine colors in different quantities and combinations will give the exact shade you need for your project. Dark colors are more difficult to achieve than light. Mixing navy blue, for instance, requires gel or paste food coloring to achieve the depth.