Washed out primary screen colors Ubuntu 19.04

Hello, i recently dual booted my MSI GP63, and installed ubuntu 19.04, but my laptop screen looks little washed out even after installing nvidia drivers version: 418, but when i connect to secondary display on that colors looks perfectly fine. can someone please help me out with this.
i tried the command as suggested at multiple places as well echo 'xrandr --output eDP-1 --set "Broadcast RGB" "Full"' but this also did nothing.