When you think of the color blue, you may think of the sky or the ocean -- or even "The Smurfs." Chances are, blue lipstick isn't the first thing that comes to mind.

But if the catwalks and aisles of Sephora are any indication, this is changing in a big way. Once reserved for '80s-style eye shadow, the color blue is now one of the hottest hues you can put on your lips. It's surprisingly flattering, undeniably bold and available in a range of shades, from brooding navy blues to ethereal aquas. Here, the 18 most stunning blue lipsticks to flaunt right now.

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The vibe: Femme fatale

Maybe you never quite grew out of your goth phase, or maybe you've really latched on to the vampy-lip trend that's been dominating runways and red carpets. Either way, you've probably already got a makeup drawer overflowing with deep berries, dark reds and blacks. The moody color that's missing from your dusky collection? A deep midnight blue. These dark-but-not-quite-black lippies bring the drama, even if you keep the rest of your makeup minimal.

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Bite Beauty Amuse Bouche Lipstick in Squid Ink, $26

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Rituel De Fille Forbidden Lipstick in Shadow Self, $23