Architectural color expert Amy Krane says that, simply put, indigo is both blue and purple."It is a deep blue tinged with purple," she says. In our interiors, it can swing either way, depending on ...

Catherine McKinley traveled through nine West African countries a decade ago to track the history of indigo, the blue dye that was made very valuable by the African slave trade. Host Michel Martin ...

Host Michel Martin speaks with McKinley about her book Indigo: In Search of the Color that Seduced the World. Catherine McKinley traveled through nine West African ...