The goal of this study is to evaluate the difference of the preferred hues of familiar objects between the color deficient
observer and the normal observer. Thirteen test color images were chosen covering fruit colors, natural scene and human
faces. It contained red, yellow, green, blue, purple and skin color. Two color deficient observer (deuteranomal) and two
normal observers were participated in this experiment. They controlled the YCC hue of the objects in the images to
obtain the most preferred and the most natural image. The selected images were analyzed using CIELAB values of each
pixel. Data analysis results showed that in the case of naturalness, both groups selected the similar hues for the most of
image, while, in the case of preference, the color deficient observer preferred more reddish or more greenish images.
Since the deuteranomalous observer has relatively week perception for red and green region, they may prefer more
reddish or greenish color. The color difference between natural hue and preferred hue of deuteranomal observer is bigger
than those of normal observer.