Why Is My PS4 Controller Blinking Blue?
The LED light on your PS4 controller flashes blue when it’s trying to connect with the console.
The light should turn solid blue shortly after your press thePSbutton.

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Some games automatically change the controller LED color.
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Why Is My PS4 Controller Flashing White?
Why Is My PS4 Controller Blinking Red?

First, try resetting the controller and replacing the cable.
If that doesn’t fix the problem, you might need to use a different controller.
If the controller is still under warranty, you should send it in for repairs.
Why Is My PS4 Controller Flashing Orange?
A blinking orange light on your PS4 means it is charging in rest mode.
If the controller loses its charge too quickly, the internal battery is probably defective.
You may need to configure the controller options in Steam.
For non-Steam games, set up the DSWindows driver.
The console will power off completely.