8 12mm 1/2 Inch Vintage Dark Blue Opaque Plastic Round Ball Buttons – Smileyboy Beads
Navy Shell Buttons - Sew Vintagely
Dark-navy-blue-buttons
Vintage Blue Mottled Coat Buttons Matching Set of 20 4 Holes Sew - Ruby Lane
Amazon.com: ButtonMode Standard Shirt Buttons 22pc Set Includes 8 Shirt Front Buttons (11mm or 7/16 in), 7 Sleeve Buttons (10mm or 3/8 in) & 7 Collar Buttons (9mm or Almost 3/8 in), Blue Navy, 22-Buttons
La Petite Shiny Dark Blue 7/8 in (22MM) Buttons 2 piece, 2 hole # 599
OLIN Matte Navy Blue Buttons with Narrow & Light Ridges, Made in Italy