5 times Kate Middleton wore the same color as the Queen

Meghan said she "rarely wore color" while in the UK because of rules about outfit colors at public appearances, Insider's Rebecca Cohen and Amanda Krause reported.

"To my understanding, you can't ever wear the same color as Her Majesty, if there's a group event," she said. "But then you also should never be wearing the same color as one of the other more senior members of the family."

Before she was engaged to Prince William, Kate matched the Queen in a red Giorgio Armani coat at the Sovereign's Parade at The Royal Military Academy in 2006, according to the Mirror.

Kate's dress was designed by Alexander McQueen, per Elle magazine.

Kate wore a blue dress by Alexander McQueen and a hat by Juliette Botterill, Town & Country reported. Queen Elizabeth wore a slightly darker shade.

Kate's periwinkle ensemble was designed by Alexander McQueen, while Queen Elizabeth wore a sky-blue coat and hat.

Kate paired her Elie Saab dress with a Philip Treacy hat, Harper's Bazaar reported.

It's unclear if Kate broke royal protocol by matching with the Queen on these occasions, or if the color policy Meghan cited is not, in fact, an actual rule all royals must follow.

Kensington Palace did not immediately respond to Insider's request for comment.