An abridged color-appearance model named CIECAT94LAB is proposed in the present study. Ir consists of the CIE 1994 chromatic-adaptation transform with some improvements and the CIELAB formula. CIECAT94LAB is easy in computation and can predict almost all the color-appearance phenomena. It was tested using the experiments conducted by CSAJ, Breneman, and McCann et al. In addition, a new measure is proposed for comparing the preadictability among various color-appearance models. The measure is independent of the scale in each of the color-appearance models.