Supplies
Author suggests Nature Spun in the following colors to correspond with your house choice:
Gryffindor - 200 Bordeaux [MC] and 308 Sunburst Gold [CC]
Slytherin - N25 Enchanted Forest [MC] and 107 Silver Sage [CC]
Ravenclaw (film) - N36 China Blue [MC] and 107 Silver Sage [CC]
Ravenclaw (book) - N36 China Blue [MC] and N94 Bev's Bear
Hufflepuff - 305 Impasse Yellow [MC] and 601 Pepper [CC]
Size US7 (4.5 mm) 16" (40.6 cm) circular needles
Size US7 (4.5 mm) DPN's
Yarn needle
Instructions
Cast on 85 stitches.
Knit in a 2x2 ribbing, (k2, p2) for 2 inches (5.0 cm) in Main Color (MC).
Switch to stockinette stitch and in the MC knit for 1.5 inches (3.8 cm).
Switch to Contrasting Color (CC) and knit for 1 inch (2.5 cm).
Switch back to MC and knit for 1 inch (2.5 cm).
Switch back to CC and knit for 1 inch (2.5 cm).
Switch back to MC and start decreasing rounds as follows:
Round 1: k10, k 2tog whole round.
Round 2: k9, k2tog whole round.
Round 3: k8, k2tog whole round.
Round 4: k all.
Round 5: k7, k2tog whole round.
Round 6: Switch to CC, k6, k2tog whole round.
Round 7: k5, k2tog whole round.
Round 8: k all.
Round 9: k4, k2tog.
Round 10: Switch to MC, k3, k2tog.
Round 11: k2, k2tog.
Round 12: k all.
Round 13: k1, k2tog.
Round 14: k2tog.
Finishing
Sew up the ends and weave in all ends hanging out. Block the hat (if you want) and let it dry over night and you have a hat to match your scarf!!
Final Product
Credit
Mandy Harvey's tutorial was taken with permission.