What is the absolutely correct blue engine paint color for a 74 Duster?

This is mine. I can’t swear that it’s correct. It was custom matched to cleaned up original paint that survived on one of the valve covers, but more than forty years of exposure to oil, grease, dirt and ultra violet light may very well have altered that sample. Anyways, it was the best I could do.View attachment 1715940343
Tanker - great looking engine. I'd like mine to look like yours. Would it be possible to provide me with the paint formulation so that I can paint my slant six this shade of blue? Thanks - cruiser