If you can't find plain navy blue women's socks, try the big "boys" in "uniform" socks if your women's shoe size is about 8-9! They fit, are comfortable and are the right shade of navy blue!
Boys' Gold Toe Ultra 𧦠Tec Back Stripe Crew Socks, 5-Pack
46 Review
Aminson Grip Ankle Socks: Non-Skid Slipper Crew Socks for Kids Boys and Girls - 6/12 Pairs
49 Review
Jefferies Socks Boys Seamless Toe Crew Athletic Socks 6-pack
47 Review
Ultimate Durability: Carhartt Boys Camp Crew Sock 6 Pair Pack
45 Review
π Boys' Outdoor Climbing Convertible Trousers - Waterproof | Clothing
47 Review
π Bold Pack Sleeve Active Hoodie Sweatshirt Set for Boys' Clothing - Stylish and Comfortable!
47 Review
Arctix Youth Pants Reinforced: Large Boys' Clothing for Active Adventures
46 Review
Waterproof Cozy-Dry Rain/Snow Pants for π§ Kids by JAN & JUL, with Fleece Lining
64 Review