Hue is an attribute of a color that corresponds to its "location on the spectrum" - technically defined by its dominant wavelength, or the central tendency of its combined wavelengths.
- Examples of different hues:
Making a shade or tint of a color does not change its hue. A monochrome image can be thought of having only one hue, all over. In fact, the word "chrome" (literally meaning color) is sometimes used to mean hue.
The hue of colors with a saturation of zero (in other words, black, white, and greyscale colors) is undefined; such colors have "no hue". Physically, they have no dominant wavelength.
Digital image editing programs provide ways to alter an image's hue without affecting its other properties. This feature is comparatively seldom used because its results usually look very odd and unrealistic. A case where it might be used, for example, is to change the hue of something that can come in a wide range of colors, such as a sunset sky, clothing, or hair color.