Everplush Diamond Jacquard Quick-Dry Hand Towels Set, 4 x (16 x 30 in), Charcoal

Do they dry your hands fast? I hate using hand towels

how many towels are included in this "set" of towels?

why doesn't the Aquamarine color for the handtowel and wash cloth match on Amazon for the Diamond Jacquard towels- ones blue and the other green?

Is the navy dark blue or more of a cobalt?