The variations in the hues and saturations of colors, when seen under different intensities of adapting light, have been measured by the binocular matching technique, using a 1° field. The results were very similar to those obtained using a 20° field. The theoretical implications are discussed.
R. W. G. HUNT, "The Perception of Color in 1° Fields for Different States of Adaptation," J. Opt. Soc. Am. 43, 479-484 (1953)