Selena Gomez celebrated the LA premiere of her new Netflix series 13 Reasons Why in an orange Oscar de la Renta mini dress with an iridescent sheen and pockets (!!!). But it wasn’t the dress that caught our attention.

Here’s something you may have missed in that sea of orange: her cobalt blue nails. They were the perfect pop of color against her citrus dress, Giuseppe Zanotti mules, and Rebecca de Ravenel earrings. Even her makeup (done by celeb MUA Hung Vanngo) was oranges and nudes.

You might be scratching your head as to why the “It Ain’t Me” singer would deck out an all orange ensemble with cool blue, but it makes a lot of sense if you’ve ever looked at a color wheel (and surely her manicurist, Tom Bachik, did), in the traditional RYB color model, the two hues are complementary colors, AKA opposite colors — which means they perfectly offset each other.

But more significantly was WHY Gomez chose the stunning color (shout-out to our amazing reader Joy Antoinette who brought this to our attention!). She wore the shade as a nod to the emotional significance of the themes in 13 Reasons Why, which deals with teen suicide, and also because blue nail polish is used as a significant plot device in the story: each of the tapes Hannah, the deceased main character, sends to her classmates and protagonist Clay Jensen is marked with the blue varnish Hannah was wearing on the last day of her life. The particular shade Gomez used was Sinful Colors Endless Blue ($2).

It makes sense that Gomez would choose to wear blue as a tribute to the tale, as she has spoken publicly about how important executive producing the project meant to her before: “It definitely hits home, and it’s why I wanted to make sure I was a part of this project in any way, even though I wouldn’t let anyone take that away from me.”

Great homage, Selena!

What do you think of the singer’s manicure? Tell us @BritandCo!

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(Photos via @hungvanngo)