Kamlet-Abboud-Taft (KAT) solvatochromic parameters (alpha, beta, and pi*) as well as the Reichardt's polarity scale (E-T(30)), were measured from ultraviolet-visible (UV-vis) absorption spectral shift of three indicator solutes namely 4-nitroaniline, N,N-dimethyl-p-nitroaniline, and the betaine dye 4-(2,4,6-triphenylpyridinium-1-yl)-2,6-diphenylphenolate. These measurements were done within the whole mole fraction range of the binary mixture of green solvents N-formylmorpholine with water, ethanol, 1-propanol, 2-propanol, 1-butanol, and ethyl acetate at room temperature (298.15 +/- 0.1 K). The Redlich-Kister model was employed to demonstrate the effect of solvent composition on the solvatochromic parameters obtained in the mixtures understudy. The data of E-T obtained for the indicator dyes in different mole x Xco-solvent fractions (0.0-1.0) of the binary mixtures were analyzed to investigate their preferential solvation in terms of both the solute-solvent and the solvent-solvent interactions. The solvent exchange model was successfully utilized to calculate preferential solvation parameters. It was found that the solvation shell of the dyes is mainly affected by the solvent-solvent interactions, and all studied systems showed the nonideal behavior.