SockShopLadies Gentle Bamboo Socks with Smooth Toe Seams in Plain and Striped Designs Pack of 3

what length are these socks?

are they in navy only? Illustration looks indigo.

Help! Looked up blue socks (to go under jeans) and black arrived this morning. Tried to return but you wont allow?

Is the natural colour skin/flesh or cream/white?