Okay. (I asked because not all NC42s are created equal. I think those two are fairly close, though.) For NARS, it looks like Barcelona may be close. I also thought of Macao, but it looked a little darker than SS NC42. NARS SG Swatches ~ http://karlasugar.net/2009/10/nars-sheer-glow-foundation/ SS Swatches ~ http://karlasugar.net/2009/07/mac-studio-sculpt-foundation/ Dior... do you have a particular foundation of theirs in mind?