Top panel: bolometric luminosity of SN 2013L. From the BB fit to the photometry (solid lines), we derived the luminosity of the hot BB component (solid blue line, dominating at early epochs) and of the warm BB component (red solid line, dominating at late epochs and emerging at +132 d). Their sum (dashed magenta line) and their sum plus the Hα emission neglected from the BB fit (black solid line) are also shown, the last one represents the total luminosity. We also obtained the corresponding luminosities from the BB fit to the optical (blue diamonds) and NIR spectra (blue dots and red squares). Central panel: temperature evolution of SN 2013L for the two different BB components fitting the SEDs of SN 2013L (symbols as in the top panel). In addition, the dashed lines mark the uncertainties on the temperature from the BB fit to the photometry. Bottom panel: radius evolution for the two different BB components fitting the SEDs of SN 2013L, symbols are the same as those in the top and central panels.