In order to get the understanding of the behavior of dyes in different solvents of varied polarity, the absorption spectrum of all dye were studied in methanol and water using TD-DFT at SCC-DFTB level of theory by utilizing parameters set org/tiorg-0-1 and solute factor of 2.7. The UV-Vis spectra calculated for all the dyes in methanol and water solvents is given in figure 6. The analysis exhibited a red shift in spectral peaks as the polarity of solvent is increased which depends upon properties of solvents and hydrogen bonding between solvent-solute and solute-solute molecules [42, 79, 80]. The amount of solvent has also affected the oscillator strength in addition to excitation energy of the photoactive species.