In order to check the accuracy of color calculation and correction based on CIE1931 2° color matching functions (CMFs) in the existing chromaticity management system, this paper selected an LED panel with three channels (636 nm, 524 nm, and 452 nm) as the target device to display five colors (gray, red, yellow, green, and blue) recommended by CIE and took an LED panel with six channels (672 nm, 636 nm, 524 nm, 508 nm, 472 nm, and 452 nm) for comparison. In total, there were eight primary sets. Furthermore, the paper calculated and adjusted the target color and compared color by CIE1931 2° CMFs to make them have similar XYZ chromaticity values, and forty color samples were obtained. In addition, forty observers with normal color vision were organized for color difference evaluation under fields of view (FOV) of 2.9° and 8.6°, respectively, and then 6400 groups of visual color difference data were collected in the experiments. The results indicate that when the compared color and the reference color stimuli are L1 (the same as the primary set used in the reference panel) and L2 primary sets (with the shift of red primary), CIE1931 2° CMFs are applicable for calculation while in other sets, they work poorly. As the FOV increases, the visual color difference from different FOVs is insignificant.