However, it's only recently that we've associated blue with baby boys and pink for girls.
In fact, this reversal of what we consider �normal� was considered conventional, even in the early 20th century.
�At one point pink was considered more of a boy�s color, (as a watered-down red, which is a fierce color) and blue was more for girls. The associate of pink with bold, dramatic red clearly affected its use for boys. An American newspaper in 1914 advised mothers, �If you like the color note on the little one�s garments, use pink for the boy and blue for the girl, if you are a follower of convention.� [The Sunday Sentinal, March 29, 1914.]
�There has been a great diversity of opinion on the subject, but the generally accepted rule is pink for the boy and blue for the girl. The reason is that pink being a more decided and stronger color is more suitable for the boy, while blue, which is more delicate and dainty, is prettier for the girl.� [Ladies Home Journal, June, 1918]
According to Jo B. Paoletti and Carol Kregloh, �The Children�s Department,� in Claudia Brush Kidwell and Valerie Steele, ed., Men and Women: Dressing the Part, (Smithsonian Institution Press, 1989). - In the United States: �The current pink for girls and blue for boys wasn�t uniform until the 1950�s.