I’ve made a few of these styles of cards over the last few years. I’ve used a variety of colors. It’s been a favorite for my "customers" who buy my cards.
Stamps: Gentler Times, Filigree, Heard from the Heart
Inks: Versamark, Not Quite Navy
Papers: Not Quite Navy, Whisper White, Vellum cardstock
Accessories: White Grosgrain Ribbon, Brads, Silver Embossing powder