How to Choose a Pastel Hair Color Based on Your Skin's Undertone

Lundqvist said that for those with golden undertones, finding the perfect balance between warm and cool colors is crucial to not washing you out.

Have fair skin? "Going for an ashy or very cool color can end up washing out the complexion, and colors that are too warm can end up bringing out too much yellow in the skin," she said. "The key is to have a color that is a little more neutral, such as a peachy pink."

If you have a medium skin tone, "this complexion can take a more saturated color. A slightly more vibrate pink, like rose, looks beautiful."

For darker skin tones, try a more saturated shade of pink. "An acidic fuchsia pink looks striking," she said. "Deeper skin suits hair with a stronger hue, but these colors should be cool or neutral, as a saturated, warm color will highlight the golden tones in the skin, making the hair lose its dimension."

Lundqvist noted that olive skin tones can often have warm or cool undertones, meaning that preciseness of the shade is essential.

For pale and cool undertones, try "a warmer color, such as soft lavender," she said. "It is a beautiful contrast, where a sky blue will be a lovely complement to the cooler tones."

A pastel shade can be trickier to match for the pale and warm undertone complexion. "A warm peach or rose gold works well, but be careful not to go too cool, as this is where pastels can start to wash you out."

Medium and cool undertones suit "richer colors — the dramatic eclipse blue look amazing on medium, olive skin tones."

"Tangerine orange is fantastic, or this season's turmeric copper is incredibly flattering on an olive, warmer skin tone; it brings out the warmth but doesn't 'match' the skin tone."

Deep and warm undertone complexions can take "strong, warm, and saturated colors, so the fiery orange-red is a great choice."

"Reds are also very flattering for olive, deep, and cool undertones, but unlike those with warmer tones, the red should be very rich; an aubergine or plum shade would look very luxe."

For pink skin tones, Lundqvist explained that finding the perfect pastel can be a little more difficult. Using a bright color is often too much of contrast and can end up bringing out too much pink. If you do want to go a pastel color, using a technique such as colorblocking is a great way to wear a bolder color without it looking too intense against the skin tone.

Iridescent tones work to subdue pink, so a strawberry blond works really well for a more pale skin tone.

"An all-over pastel will probably not be very flattering to this medium and deep pink tone. The color is too much of a contrast and brings out the underlying pink in the skin, making it look incredibly rosy. But this doesn't mean you can't get creative with your hair. A color bleed at the end is a great way of introducing color, as it is not framing the face."

For cool, neutral skin tones, Lundqvist noted that "as we get older, our skin and hair looses melanin as our bodies stop producing it as much. This can result in some skin tones having a more neutral coloring. This generally only happens to those who fall into the pale category."

Naturally, warming up the more pale complexion is "key when choosing a color; this season's corn blond would do this, giving the skin an effortless glow. If you do want to still try the pastel trend, opt for an oyster shade with a touch of warm pink to bring out any underlying yellow."

Lundqvist explained that dark complexions tend to have peachier undertones and take pastel colors beautifully. Similarly to olive, these undertones can be either cool or warm.

Antique gold, peach, and wine rose shades complement the more pale and warm tone perfectly.

This season's lilac rose is the perfect shade for those with the slightly more pale and cool coloring. "A mellow pink infused with warm lilac creates a playful shade that complements the cool undertones without highlighting them."

"Those with a medium to deep and warm, peachier coloring can wear very saturated pastels starting at the medium level. This season's aspen gold is a pure and joyful color, which adds a hint of luxury to the pastel look; it's highly saturated so it's great for those with very peachy, darker skin."

"Really saturated, cooler colors, like aqua blue or royal blue, work as they complement the medium to deep cooler tones but are also very vivid. Going for a cooler color doesn't just limit you to blues though. Colors have undertones, so a cool red, such as fire red, would also have the same effect."