Tiffany Blue 5×7 Cardstock for Invitations Card (5.125 x 7 inches): solid color 100# heavyweight cover acid free processed chlorine free manufactured with 100% clean renewable hydroelectric energy. A bright turquoise aqua blue color. Background cards are used for our unique layered invitations. A printed overlay embellishment and envelope is required to complete the look. Click to view complete list of blank invitation supplies.