Paint Codes

I found a list of paint codes for 1964 Plymouths, but I want to find out what color my car was originally painted. I'm not sure if it was Medium Blue or Medium Turquoise. I don't have or can't find the fender tag (if there was one in 64) and there is nothing in the door jams. The VIN doesn't help either. I tried to find a place where the paint wouldn't be faded (behind the headlamp, for example), but it doesn't really match any of the paint chips that I have. I'm kind of at a loss and I want to order paint pretty soon.