Blue Slate is a medium blue gray, and a good subtle choice with other neutral or cool colorways.
With a 4-ply construction, Putnam is round and smooth, with the right elasticity and density for socks. Putnam has a smooth matte finish that will show off all your careful stitching.
Size: 400 yd / 3.9 oz (365m / 110g) skeins
Content: 75% superwash Merino wool, 25% nylon
Gauge: Fingering weight. 7-9 stitches per inch on US 0-2.
Care Instructions: Machine wash gentle. This yarn should be dried flat for best results.