Color is a psychophysical experience that requires three components, light, colored object and the visual system. We see color when visible light of a specific wavelength falls on a colored object, then we have transmission, absorption or reflection. The visual system has a function to light that falls in to the eye, through the optic nerve transmit to the brain. When we define colors, for simpler understanding, we use attributes such as hue, brightness and colorfulness. For color appearance models is important to distinguish between the six dimensions of color- brightness, lightness, saturation, colorfulness, chroma and hue. Color experience changes depending on the viewing conditions. For this reason, models are used to display colors that have the ability to predict changes in color, which is caused by changes in the conditions of observation, the level of brightness or knowledge. Each of color appearance models has some advantages and disadvantages, and there is no single model applicable to all systems. These models are CIELAB, CIELUV, Hunt model, Nayatani model, RLAB, ZLAB, LLAB, ATD model, CIECAM97s, CIECAM02. In the experimental part, using the colorimeter measured the color on the four tablets with the aim of finding models (RLAB, ZLAB, CIECAM97s, CIECAM02) that could be applied to the tablets.