What does Kate Middleton's teal St. Patrick's Day attire mean?

Kate Middleton wore a teal coat dress for the St Patrick's Day event as the new Honorary Colonel.

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Her outfit perfectly matched the 1st Battalion of the Irish Guards.

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Middleton's teal outfit shows her dedication to her role as the next Queen-in-making.

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[{"selector":"#anim-d6b9a099-7b89-4079-ad01-1f42c95309b5 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(-10.681818220708294%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-7711d8fc-caf7-4af8-8640-10cb9a73fc76","keyframes":{"opacity":[1,1]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-c6c966ba-dfc3-4cca-a7bc-634a48caaf6f","keyframes":{"transform":["scale(3)","scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] Blue is a symbolic color of Ireland and is frequently worn by the royals.

The plums of a darker blue color matched the mantle and sash of the Order of St. Patrick.

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The Little Book of Color author explained the royals' color choice as representing themselves as a cohesive unit.

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