This map was commissioned by the Cincinnati Chamber of Commerce sometime around 2013 as part of a series of maps on demographics and community change.
After whites, blacks are by far the largest group in Cincinnati, though including either in this map with any prominence totally washed out the other groups. Thus blacks and whites were indicated in the above map by the light grey contours (different density scale) in the background.
Another iteration of this map included the full metropolitan statistical area and a more printer-friendly (cf. screen-friendly) color scheme.