Mass–temperature diagram. We show with continuous black lines the effective temperatures for low-mass stars (< 1.4 M_⊙) predicted by the models of Baraffe et al. (2015), as they evolve from 1 Myr to 1 Gyr. We compare the models to our measurements of the individual temperatures of the eclipsing components of MML 53 (green-filled circles with black edge), and the other young EBs in the literature with measured temperatures. The EBs, their symbols and colors are the same as in Fig. 11. Each black line is an isochrone, and represents the expected temperatures of stars at a given age.