The RLAB color space has been tested for a variety of viewing conditions and stimulus types. These tests have shown that RLAB performs well for complex stimuli and not-so-well for simple stimuli. This paper reviews the various psychophysical results, interprets their differences, and describes evolutionary enhancements to the RLAB model that simplify it while improving its performance.
Mark D. Fairchild, "Visual Evaluation and Evolution of the RLAB Color Space" in Proc. IS&T 2nd Color and Imaging Conf., 1994, pp 9 - 13, https://doi.org/10.2352/CIC.1994.2.1.art00003