hue [hues](the characteristic related to the light frequency that appears in the color) noun [UK: hjuː] [US: ˈhjuː]This girl's hair has the red hue of the setting sun. = El pelo de esta chica tiene la tonalidad roja del sol poniente.
armadura de tonalidadnoun {f}
key signature(indication of the key of a composition) noun [UK: kiː ˈsɪɡ.nə.tʃə(r)] [US: ˈkiː ˈsɪɡ.nə.tʃər]