If you watch princesses and queens closely, you'll notice one recurring color: blue. From Princess Leonor in Spain, through Kate Middleton, to the late Princess Diana - blue isn't a random fashion choice but a precisely calculated language that needs no words.

Blue has always carried weight. In ancient Egypt it was precious and symbolized eternity and divine protection; in the Middle Ages the „ultramarine“ pigment used to paint the Madonna sometimes cost more than gold. According to color-psychology expert Karen Haller, blue communicates „authority, trust, security and dedication“ - it projects power without aggression and inspires trust without losing prestige. The ideal color when you need to send an institutional message.

The examples are everywhere. Leonor prefers soft, powdery shades. Kate Middleton chose sapphire blue when she announced her engagement in 2010, emphasizing the link with Diana's legacy, whose engagement ring has the tone of a Ceylon sapphire. Queen Letizia reaches for cobalt blue for state dinners. Elizabeth II long understood blue as a symbol of stability.

What looks like a harmless wardrobe choice is actually a discipline called „diplomatic dressing“ - blue is used strategically on state visits and ceremonies to convey permanence, neutrality and continuity. Next time you see a queen in blue, know that she didn't pick a color - she sent a message.