Hue refers to the attribute of a color that allows it to be classified as red, blue, green, or any other color on the spectrum. It is one of the main properties of color, along with saturation and brightness. Hue is often represented in color models, such as the RGB model, which uses red, green, and blue light to create various colors. In art and design, understanding hue is essential for creating visually appealing compositions. Different hues can evoke different emotions and responses. For example, warm hues like red and yellow can create feelings of warmth and energy, while cool hues like blue and green often convey calmness and tranquility.