Vietnam era olive drab

Need some help determining what is the proper shade for Vietnam era olive drab. I know that A/C OD was a darker shade than WWII OD. but not sure about Vietnam. Any help would be appreciated.

Tamiya TS-5 Spray is a nice dark shade of OD that work on Vietnam War era vehicles.


This is my Tamiya M48A3 as I was building it. I painted it in Tamiya TS-5 rattle can Olive Drab.