Colour harmony was investigated using direct visual observations of computer simulated displays and compared with predictions of different colour harmony theories. Ou and Luo  constructed a model of colour harmony (CH formula) based on a harmony pair comparison experiment. The present paper compares our results with harmony predictions of the CH formula, and of colour harmony models based on Munsell's and Nemcsics's work.The visual impression of colour harmony is subject to changes when the light source illuminating the samples is changed from a reference source (e.g. D65) to e.g. an RGB LED based light source. Colour rendering quality of a light source might be characterized by the extent of the distortion of the perceived harmony of certain sets of test colour samples that are harmonious under the reference illuminant. This would yield a “colour harmony rendering index” which might supplement the current CIE colour rendering index.
Ferenc Szabó, Peter Bodrogi, János Schanda, "Comparison of Colour Harmony Models: Visual Experiment with Reflecting Samples Simulated on a Colour CRT Monitor" in Proc. IS&T CGIV 2006 3rd European Conf. on Colour in Graphics, Imaging, and Vision, 2006, pp 392 - 397, https://doi.org/10.2352/CGIV.2006.3.1.art00081