Ratio of the median concentration of the halos hosting the stellar mass, r-band, blue and red galaxy samples with n = 0.003 h³ Mpc⁻³ at z = 0 to that of all halos at z = 0. The results for the stellar mass, r-band, blue and red galaxy samples are shown in orange, green, blue and red, respectively. The upper panel shows a histogram with the number of galaxies as a function of halo mass, while the right panel shows the median concentration of halos hosting different galaxy populations and all halos.