Color-color diagram (using the continuum) for selecting deeply obscured nuclei at z = 3 using JWST/MIRI filters. Color-coded stars correspond to the host galaxy contribution of the simulated spectra shown in Fig. 1. The dashed blue lines denote the region where sources have a contribution of the buried nuclei greater than 40%. Gray circles correspond to CEERS sources with redshift measurements. Magenta squares represent those sources at redshift ∼2.75–3.25.