Adopted quiescent vs. star-forming galaxy classification. The observed m814–m140 vs. m140–[3.6] color–color diagram of candidate members (green points) is shown for all clusters in the r/r₅₀₀ <  0.7 region (the effective area covered for each cluster is indicated). Upper set of panels: m140-selected (not mass complete) candidate member samples (the mass completeness limit for each cluster is indicated). Lower set of panels: galaxies down to the common stellar mass completeness limit for all clusters, log(M/M_⊙) = 10.85. Symbol size of green points scales with the statistical background-subtraction weights as in Fig. 1. Symbol color scales with stellar mass as shown by the color bar. Empty symbols show points for which a m140–[3.6] color was inferred using the 4.5 μm flux (see Sect. 5.2). Light red and blue squares show, respectively, UVJ-quiescent and UVJ-starforming galaxies from the control field sample with the same magnitude (top panels) or mass (bottom panels) threshold as candidate cluster members, and with a photometric redshift within ±0.1 from the cluster redshift. The thick light-gray line shows the adopted quiescent vs. star-forming separation in the observed m814–m140 vs. m140–[3.6] color plane. For clusters without a final spectroscopic redshift confirmation (see Sect. 4), the thin dark-gray lines show the separation that would be adopted if assuming a redshift at the edges of the black+white error bars in Fig. 5 (top).