Various colors' hue values

Quick answer：

The term 'hue values' refers to the numerical representation of colors in the color spectrum, which is used in color theory and colorimetry. Hue is one of the three primary attributes of color, the others being saturation and brightness. It defines the position of a color on the color wheel, ranging from red through orange, yellow, green, blue, indigo, and violet. In digital color representation, hue values are often expressed in degrees on the color wheel, with 0° typically corresponding to red and 360° to red again. This concept is essential in color matching, image processing, and design.