I only say this because of all the times I've seen someone post the paint codes that they used.... but then turn around and hear "well this or that didn't quite match because of yada yada" or whatever.
And paint codes are generally only good if you get the same exact type and brand of paint that they used.
And be sure to go to a reputable PAINT Store.
One with a good color matching/scanning machine gizmo.
Home Depots and Lowes are OK, but not neccisarily as accurate in some opinions.
Also try to use a chip that is from a clean, non-faded area if at all possible.