The increasing bi/multiracial1 community in the United States has generated much literature about racial identity and social psychological well-being. Drawing on sixty in-depth interviews with Black/White biracial Americans, this paper shifts the theoretical focus from identity and well-being to the conceptual development of how race shapes bi/multiracial Americans’ social interactions with both Whites and Blacks. The majority of participants reported interacting differently when in predominately White settings versus predominately Black settings. I offer the concept of “racial capital” to highlight the repertoire of racial resources (knowledge, experiences, meaning, and language) that biracial Americans use to negotiate racial boundaries in a highly racialized society. These findings reveal the continuing significance of racial boundaries in a population that is often celebrated as evidence of racial harmony in the United States.
