Cascade 220 Superwash Yarn.
A worsted weight Yarn, 100% wool

Harry Potter colors for knitting:
Gryffindor – 893 maroon and 877 maize
Slytherin – 854 forest green and 892 soft gray
Ravenclaw (film) – 889 navy and 892 soft gray
Ravenclaw (book) – 889 navy and 853 cognac
Hufflepuff – 815 black and 870 maize

Click here to see the Cascade 220 Super Wash Color Cards

#801 Army Green

#803 Royal Purple

#809 Really Red

#813 Blue Velvet

#814 Hyacinth

#815 Black

#816 Gray

#817 Aran

#818 Mocha

#819 Chocolate

#820 Lemon

#821 Daffodil-Marigold

#824 Yellow

#828 Ginger

#836 Pink

#844 Periwinkle

#849 Medium Aqua

#850 Lime Sherbet

#854 Navy

#855 Maroon

#856 Aporto

#859 Lake Chelan Heather

#860 Smoke Heather

#861 Cafe

#862 Walnut Heather

#863 Cordovan Heather

#865 Olive Heather

#864 Christmas Green

#867 Lichen

#868 Autumn Heather

#870 Straw

#871 White

#875 Feather Gray

#877 Tangerine

#878 Lazy Maize

#893 Ruby

#894 Strawberry Cream

#897 Baby Denim

#900 Charcoal

#901 Cotton Candy

#902 Soft Pink

#903 Flamingo

#904 Colonial Blue Heather

#906 Charteuse

#907 Tangerine Heather

#908 Magenta

#1909 Ruby Heather

#1910 Summer Sky Heather

#1913 Jet

#1914 Alaska Sky (Pale Blue)

#1915 Banana Cream

#1916 Japanese Maple

#1921 Persimmon

#1922 Deep Red Heather

#1923 Red Wine Heather