Here is a site that you can give it RGB and it will give the closest Pantone
http://rgb.to/0,72,145
On Mon, Jan 2, 2017 at 7:48 AM, Noel Chiappa <jnc at mercury.lcs.mit.edu> wrote:
   From: Pete
Lancashire 
  To convert from Muncell to RGB 
 Interesting. For one colour (D.C. Blue), listed on Charles' page as Munsell
 5PB 3/10, that page gives it as 'outside sRGB gamut', whereas the page you
 list gives it as sRGB [0,72,145].
         Noel