OK... now paints.
The Urban's Reference Chart suggests a mix of 6*Hu:91 + 2*Hu:189 + 1*Hu:3 for the RLM72 colour. The Hu stands for Humbrol of course. So there is no Humbrol equivalent for the colour directly. And it is the same suggested in my source. Other paints.... Xtracolor X222, Testors enemel 2082, Pactra A89.
The RLM73 is suggested by Urban's Chart as the Humbrol 149, my source says Humbrol 31. But it's a typo I think and there should have been Humbrol 30. Other paints.... Xtracolor X223 or X129, Testors enamel 2083, Pactra A90.