Absolute magnitude of the SN Ib progenitor models as a function of M_ini, in the ACS/WFC F435W (left), F606W (middle), and F814W filters (right). The progenitor spectral type is color coded, with cyan symbols corresponding to WOs and blue symbols to late WN stars. The evolutionary model type is coded as open (without rotation) and filled (with rotation) symbols. The orange regions correspond to the absolute magnitudes of iPTF13bvn derived from the measured photometry. The upper limits of other SN Ib progenitors (2001B and 2012au, from E13) are shown by horizontal dashed lines. The non-rotating 32 M_⊙ model fits the observations of the iPTF13bvn progenitor relatively well.