Here, based on a study by Arindrajit Dube [pdf] is a chart designed by Alissa Scheller (for the Huffington Post) of what each state’s minimum wage would be if it met the minimum standard of being equal to one-half the median wage in each state.
As Dubit explains,
A natural target is to set the minimum wage to half of the median full-time wage. This target has important historical precedence in the United States: in the 1960s, this ratio was 51 percent, reaching a high of 55 percent in 1968. Averaged over the 1960–1979 period, the ratio stood at 48 percent. Approximately half the median full-time wage is also the norm among all OECD countries with a statutory minimum wage. For OECD countries, on average, the minimum wage in 2012 (using the latest data available) was equal to 49 percent of the median wage; averaged over the entire sample between 1960 and 2012, the minimum stood at 48 percent of the median (OECD 2013). In contrast, the U.S. minimum wage now stands at 38 percent of the median wage, the third-lowest among OECD countries after Estonia and the Czech Republic.