Yes, you can.  It would be reported as an itemized deduction on your federal return Form 1040 Schedule A.  And a tax payment made in 2017 on your California tax return.  If paid on or before 12/31/2017.

To enter, edit or delete estimated taxes paid (Federal, State, Local) - 

• Click on Federal Taxes (Personal using Home and Business)
• Click on Deductions and Credits
• Click on I'll choose what I work on (if shown)
• Scroll down to Estimates and Other Taxes Paid
• On Estimates, click on the start or update button

Or enter estimates paid in the Search/Find box located in the upper right of the online program screen.  Click on Jump to estimates paid