A spectrally selective surface is produced by electrodeposition of a Co-Cr coating on a stainless steel substrate. The plating bath consisted of CrCl3 center dot 6H(2)O and CoCl2 center dot 6H(2)O dissolved in a deep eutectic solvent (DES) of choline chloride and ethylene glycol. This DES enables the use of trivalent (Cr(III)) instead of hexavalent chromium (Cr(XI)) which significantly reduces health risks associated with chromium electroplating. The selective surface exhibits an absorptance (alpha) of 0.96 and an emittance (epsilon) of 0.13 at 100 degrees C making it well adapted for mid- to lowtemperature concentrating solar collectors. The 1.8 mu m thick coating exhibits a porous structure on the surface as well as throughout the entire coating. The surface of the coating comprises of Co oxides and hydroxides, while the bulk consists of metallic and oxidized Co and only small fractions of Cr compounds. Initial tests of the thermal stability indicate that the coating does not maintain optical properties at an acceptable level over a lifetime of 25 years. At approximately 438 degrees C significant parts of the coating is oxidized in an oxygen rich environment.