The purpose of this study is to investigate the effects of figural unity of non-annular test figure (TF) on simultaneous hue contrast in Koffka-ring type patterns. To manipulate the figural unity systematically, we used a color-graphic system to examine the two stimulus conditions (seven degrees of separation and two styles of division) of the TF. Five subjects adjusted comparison figure to match the apparent hues of two TF sections overlapping a red-and-green inducing figure with gray background. The results revealed that the magnitudes of hue contrast (MHCs) in the undivided TF decreased as the degree of separation decreased, and that the MHCs in the divided TF remained almost unchanged. In conclusion, the MHCs were significantly affected by the figural unity in separating and dividing the TF, and this finding was closely related to the magnitudes of brightness contrast in our previous study (Goto, et al., 1991) using Koffka-ring type patterns.