The color device has a core with hues that gradually change whiteness, respectively. The discs have hues covering an entire color spectrum at a certain level of whiteness. All hues of the first and second discs have the first and second level of whiteness, respectively. The discs extend perpendicularly outwardly from the core. The first disc is axially remote from the second disc so that a distance (d) is formed therebetween. The discs are aligned so that color cells of the first disc axially aligned with color cells of the second disc have identical hues except for different whiteness. The level of color saturation in the color cells is gradually increased radially outwardly from the core.