The MAE and MAXE can be reduced by energy scaling due to systematic deviations. A global hybrid with large HF-exchange contribution works best: sTDA/sTD-DFT in combination with the functionals BHLYP or M06-2X and the def2-SVP basis set possess MAE's of only 0.06 eV (see SI, Table and Figure ). Moreover, MAXE is reduced to 0.12 eV for M06-2X functional in combination with the RPA-approach and def2-SVP basis set. Therefore, employing global hybrids with large HF-exchange contribution and energy scaling might be a suitable, albeit somewhat empirical approach to estimate the absorption energies of porphyrinoids.