Pink is the color most commonly associated with a baby girl in traditional Western baby-shower symbolism.
This association is cultural rather than biological. In the United States and parts of Europe, retailers, greeting cards, nursery decorations, and celebration themes have often used pink for girls and blue for boys. Baby showers helped reinforce these visual conventions through clothing, wrapping paper, balloons, cakes, and invitations.
The pairing was not always fixed. Earlier Western traditions sometimes treated blue as a delicate or feminine color and pink as a stronger shade associated with boys. The modern pink-for-girls convention became more firmly established during the 20th century, especially through mass marketing and children’s clothing.
Pink is therefore a common tradition, not a universal rule. Families and communities may choose any color, and many contemporary showers deliberately use neutral palettes such as green, yellow, white, or multicolored designs.