Color–color diagram of H–M′ versus L′–M′. The field objects are color-coded by M, L, and T spectral types (see discrete colorbar), the young and low-gravity dwarf objects are indicated with a gray square, and the directly imaged companions are labeled individually. PDS 70 b is highlighted with a red star. The blue and orange lines show the synthetic colors computed from the AMES-Cond and AMES-Dusty evolutionary tracks at an age of 5 Myr. The black dashed line shows the synthetic colors of a blackbody spectrum. The black arrows indicate the reddening by MgSiO₃ grains with amean radius of 0.1 and 1 μm, and of 0.05 and 5 mag, respectively.