Blue is generally acknowledged as the color of success. As it is the color of the sky and water, it's associated with loyalty and authority. It helps you to think creatively, and shows others that you are trustworthy. Navy blue is a commanding color, as it's both friendly and powerful.
When to wear: To ace that job interview for the position you're just dying to have.
Get the look: Dress: Madewell; Scarf: Anthropologie; Top: H&M; Bag: J.Crew; Necklace: J.Crew