I painted the wheels on my desoto petty blue. The paint can reads- corporate blue 2423 B3

Interesting seeing that '64 Savoy above...here's an old MCG article on my favorite color, Petty Blue. The guy who ordered it picked the color from a Dodge pickup:

http://s12.postimg.org/sm6a3qpwd/pettyblue66pg1.jpg

The Ditzler paint code is 12785

I don't have my paint chips here but I know The TB3 blue used in '72 & '73 has a different Dupont formula number than corporate blue.

Below is my response back in Dec. 2010 to a guy in the UK who was asking about corporate colors.

"I found the color codes today and called my paint supplier to make sure they are still valid and can still be mixed. These are Dupont brand paint numbers, not Chrysler numbers. If you don’t have a Dupont supplier there, let me know what brands you have and I’ll try to get a cross-reference. I did find out these colors were reformulated a couple of times. I think the last time was in the late ’80s or early ’90s, probably due to changes to the mixing tints.
All 3 colors can be mixed in Chromabase basecoat which must be clearcoated.
All 3 colors can be mixed in ChromaOne or ChromaPremier singlestage.
The white can also be mixed in the cheaper Nason single stage.
Corporate White # is 55769
Corporate Blue # is 43009
Corporate Red # is 44236"

If anyone needs the Dupont # for TB3 let me know and I'll post it too.
Dallas

Yes please, I'll be repainting my car in the new year.

I'll get it when I go back to the shop & post it tomorrow nite or Monday nite.
Dallas

The Dupont # for TB3 is 5351 followed by a letter which indicates the type of paint. 'K' for Chromabase basecoat for example.

Dallas

Thanks Dallas....appreciate you looking that up.

Corporate Blue is darker than Petty Blue. They are NOT the same. Petty Blue was offered in '72 or '73 (can't recall first year) and was labeled TB3. Both are solid colors though.