Galactic blue is a color often associated with the Milky Way galaxy. It is a deep, rich blue hue that symbolizes the cosmos and is often used in art and design to evoke a sense of the universe.

Blue Gold is a term often used to refer to a blue precious metal, such as cobalt or sometimes tin, which has been used in jewelry and ornamental items. It can also be a metaphor for the high value of something that is scarce or difficult to obtain.

Niagara Blue refers to a color, which is a shade of blue. It is often used in various contexts, including art, design, and nature. In art, Niagara Blue is a pigment used by artists. In nature, it is associated with certain minerals and gemstones.

Oxford Blue refers to a particular shade of blue, used to denote the color of the robes worn by the students of the University of Oxford. It is a deep blue with a slight purple hue, reminiscent of the color of the university's coat of arms.

Dark Blue is a deep shade of blue, often associated with the night sky and the ocean. It is also used to convey a sense of depth and mystery. In art and design, dark blue can evoke feelings of calmness and serenity.