Thank you for the opportunity to help you with your question!
x = (6.626 x 10¯34 J s) (5.90 x 1014 s¯1)
x = 3.91x 10¯19 J
NOTE : All frequencies of visible light will have an energy in the 10¯19 J range of values. If you wish to, you may calculate this for yourself. The wavelength range of visible light is taken to be from 400 nm to 700 nm. This translates (more-or-less) to a range from 5 x 10¯19 J down to 3 x 10¯19 J.
Please let me know if you need any clarification. I'm always happy to answer your questions.