90% colour-dependent completeness limit in stellar mass for blue and red galaxies as a function of redshift (blue and red lines). We used data and stellar masses (Chabrier IMF) from the UltraVISTA catalogue in the COSMOS field (McCracken et al. 2012; Ilbert et al. 2013), and the blue and red galaxies were defined using a simple colour-colour rest-frame NUV − R − J plot. The shaded area indicates the z ≤ 0.3 redshift range.