Dark blue yarn, 80% acrylic and 20% wool, needle size 6-7, gauge 18-19 stitches. The first six photos show unused yarn of the same color. From the seventh photo onwards, there are remnants of yarn used for 1-2 balls, and the eleventh photo shows a mix of two colors. The blue shades may look similar in the photos, but they are slightly different colors, such as blue, marine blue, and purple. The yarn was purchased about three years ago and about six months ago, so I don't think there is any aging. - Brand: Wool Mix - Material: 80% acrylic, 20% wool - Color: Dark Blue - Gauge: 18-19 stitches - Needle Size: 6-7 - Brand: Joyful - Material: 100% wool - Color: Dark - Model Number: 816 23-A Thank you for looking.