Can anyone tell me what the correct paint is for the black along the bottom of the 68 chevelle??

Is it supposed to match the flat black on the rear between the trunk and the bumper??

I am having my car painted in a few weeks and want to make sure i get it right, Any help would be great

It should be a semi-gloss black not flat. I don't have a code but when I had my car fixed after an accident they matched the black up pretty easily. i looked around on the net and couldn't find any exact percentage code to pass along. Sorry.