Mike Dailey has paint chip charts and codes on his site;
http://www.panteraplace.com/page337.htm
What does the paint code tag say it is? If it's been repainted at some point it could literally be anything.
Either way as paint fades as it ages I'd take it to a paint shop, have them take a photo with a special camera and mix from that. They usually guarantee a match that way.
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