Small suprathreshold color-difference (about 3 ΔE*ab units) chromaticity ellipses at 16 color centers in the a*b* plane of CIELAB space were measured using the psychophysical method of constant stimuli. The corresponding chroma weighting function SC_ZJU07 and hue weighting function SH_ZJU07 were respectively fitted based on the chroma- and hue-difference data of 16 non-neutral-color color centers from this study and RIT-Dupont datasets. The chroma and hue weighting functions of six CIELAB-based color-difference formulae together with SC_ZJU07 and SH_ZJU07 were compared, and the detailed analysis indicates that SC_ZJU07 and SH_ZJU07 perform best. For the chroma-difference data, the predicting performances of chroma weighting functions of all the six formulae are not good, while for the hue-difference data, the hue weighting functions of CIEDE2000 obviously outperform the others.