Progress on the calibration of surface brightness–color relations for early- and late-type stars A. Salsi, N. Nardetto, D. Mourard, D. Graczyk, M. Taormina, O. Creevey, V. Hocdé, F. Morand, K. Perraut, G. Pietrzynski and G. H. Schaefer A&A, 652 (2021) A26 Published online: 03 August 2021 DOI: 10.1051/0004-6361/202140763