Contemplating doing a couple1/700 JMSDF ships …current vessel and her WW2 namesake. What shade of grey is the current shade?

According to the instructions for Trumpeter 1/350 JMSDF DDG-177 Atago on Scalemates, Gunze 308 or Tamiya XF-19.

Actually, “Ships with the Same Name” sounds like a nice idea for a campaign.