From left: Essie Coat Azure (essie.com; $8), Estée Lauder Wild Blue (nordstrom.com; $19), Borghese Marino (ulta.com; $8), Sephora Curacao (sephora.com; $5), Orly Sapphire Silk (orlybeauty.com; $7.50), CND Anchor Blue (cnd.com; $9), OPI Yodel Me On My Cell (ulta.com; $8.50).