the $(b,c,s)$ triplet works for Koide parameters $r = \sqrt{2}$ (the basic lepton parameter) $\theta = 0.66642$ at a scale of $939.65$ MeV (roughly the proton mass). This gives the mass set ($4189.9$,$92.01$,$1356.0$) MeV. The strange quark eigenvalue comes with a minus sign. Now to check the $(t,u,d)$ triplet ... Posted