Hyprland

Add the following settings to your Hyprland configuration file (usually located at ~/.config/hypr/hyprland.conf).

These settings are for general window appearance and functionality.

general {
  gaps_in = 5
  gaps_out = 10
}

decoration {
  rounding = 20
  rounding_power = 2

  shadow {
    enabled = true
    range = 4
    render_power = 3
    color = rgba(1a1a1aee)
  }

  blur {
    enabled = true
    size = 3
    passes = 2
    vibrancy = 0.1696
  }
}

Blur

Next, you can enable blur for the Noctalia bar and panels background.

Blurred bar and panels

layerrule {
  name = noctalia
  match:namespace = noctalia-background-.*$
  ignore_alpha = 0.5
  blur = true
  blur_popups = true
}

Fine-tuned blur example