Well, according to Wiki, "conversions here are best described as "nominal". They will produce an invertible conversion between RGB and a subset of CMYK; that is, one can take an RGB color and convert to certain CMYK colors, and from these CMYK colors obtain the corresponding, original RGB equivalents. However, conversion of CMYK colors in general to RGB colors is not invertible; that is, given a CMYK color which is converted to RGB, performing the former conversion may not give the origina