While deep and warmer tones can pull off a much darker root, you still want to make sure your highlights and your roots naturally fade into each other to avoid an unflattering ombre-like appearance.

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Salmon and even sunset-hued Starburst hair color turned heads this summer, but expect bold fashion colors to shift towards rich jewel tones this fall. Colors like sapphire and deep turquoise are expected to take center stage, as they give off an enchanting finish that will totally turn heads. If you're dissuaded by the short shelf life of colorful hair, think of it as an opportunity to play around, suggests Papanikolas. "Fashion colors have more flexibility since they tend to fade fast, so you are able to shift tones rather frequently," he explains.

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If your complexion has cool undertones, flatter your lighter eyes with blue jewel tones like dark teals, royal blues, and even denim.

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Warm and deep tones can go for forest green and emerald tones, as it allows you to keep your dark root with just the right punch of color.

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