Columbia Grammar & Preparatory School is a school at 5 West 93rd Street on the Upper West Side of Manhattan in New York City. The oldest nonsectarian independent school in the city, it serves students from pre-kindergarten through the twelfth grade and offers a college preparatory curriculum.

Columbia blue is a light blue color named after Columbia University. The color itself derives from the official hue of the Philolexian Society, the university's oldest student organization. Although Columbia blue is often identified with Pantone 292, the Philolexian Society first used it in the early 19th century, before the standardization of colors. Pantone 290, a slightly lighter shade of blue, has also been specified by some Columbia University offices, and is the current official color listed by the Columbia University visual communications office. Several other shades are also used by parts of the university in an official capacity.