Evaluating color accuracy of image archives is accomplished using test targets, colorimetric measurements, and total color difference calculations. Both CIELAB and CIEDE2000 are used with the later often preferred being an international standard and having a weighting function for chroma position. Its lightness weighting function is problematic when used for image archiving because it allows for greater lightness errors for dark colors, colors critical in defining image quality. A statistical analysis was performed on data used to derive CIEDE2000. The results do not support the weighting function for lightness. For imaging applications, it is recommended that the lightness weighting function be replaced with unity.