Cyan is a color that lies between blue and green on the visible spectrum. It is often described as a bright, vibrant hue that resembles the color of tropical waters. In the RGB color model, cyan is created by combining equal parts of green and blue light. It is commonly used in design, art, and printing. In the context of color theory, cyan is one of the primary colors in the subtractive color model, which includes magenta and yellow. This model is widely used in color printing, where cyan is essential for producing a wide range of colors.