Today’s approach to gender-specific colors would confuse—and likely amuse—our 19th-century counterparts. White was the preferred color for babies and children of any sex until they reached the age of about 6 or 7, mainly because white clothes and diapers could be bleached. As they grew older, children were dressed in paler versions of the colors adults wore. Red was considered a strong, virile, masculine shade, while blue was dainty, delicate, feminine. So young boys were more frequently seen in pink, while young girls favored pale blue. It wasn’t until the early 20th century—quite possibly as late as the 1940s—that pink began to be universally assigned to girls and blue to boys.