Effective temperature (top) and bolometric luminosity (bottom) vs. age of HD 167665B (gray area) compared to evolutionary tracks from the COND (Baraffe et al. 2003), Saumon & Marley (2008) (for two treatments of the clouds), and Burrows et al. (1997) models assuming a 68.3% confidence interval of the dynamical mass of the companion (colored points with uncertainties). Small horizontal offsets are applied for clarity to all models except for COND.