Teal Pearl or Cobalt Pearl, goes with any secondary or as a solid…
I like The Spray Source, even just for color searches. And I actually have a 49 Dodge like the first 2 shown here, in Cub Cadet Beige/Cobalt Pearl… Pattern was actually 1951 or 1952 only “Spring Special”.
Ralph (85 C10 swb) was the odd red over white 85 only 2 tone. White on a Square is basic boring Polar White, add a bunch of pearl to it. Your offset color, regardless of what blue you choose? I’d personally run a heavy blue glitter in it, bury the truck in clear, or a mixed metallic base, candy cobalt mid coat, again, bury the finished job in clear. Painted a LOT of streetrods and motorcycles over the last 40 years, started painting at 14, uncle owned a custom shop…