Color-magnitude diagrams for the Gaia 100 pc sample. The sample construction process is exemplified with color-magnitude diagrams for the observational sample for: the different selection phases (left panels; see Table 1); the no-cuts samples (upper panels); the flux and parallax selection (upper-middle panels); the excess factor removal (lower-middle panels); and the final WDMS sample (bottom panels). The corresponding diagrams of the simulated sample are also shown (right panels). The WDMS region (Rebassa-Mansergas et al. 2021b) is marked with a solid blue line, and the dashed blue line depicts the magnitude limit of our simulations. Finally, the selection function (green line contours corresponding to 15%, 36%, and 49%) is derived from the observed sample from Rebassa-Mansergas et al. (2021 b, bottom-left panel, magenta dots; RM+21) and applied to a typical synthetic realization (bottom-right panel, magenta dots).