hyprsunset

hyprsunset is a small utility to provide a blue light filter for your system.

This method is preferred to screen shaders as it will not be captured via recording / screenshots.

hyprsunset also provides a gamma filter, which can be used to adjust percieved display brightness on monitors that do not support software control, or to reduce percieved brightness below the monitor’s minimum.

Installation

yay -S hyprsunset

Usage

See hyprsunset --help.

Run at startup

To autostart hyprsunset, add: exec-once = hyprsunset to your hyprland.conf. Alternatively, use systemctl --user enable --now hyprsunset.service in order to use hyprsunset as a systemd user service.

IPC

hyprsunset supports IPC via hyprctl. Both color temperature and the gamma filter are adjustable:

# Enable blue-light filter
hyprctl hyprsunset temperature 2500
# Disable blue-light filter
hyprctl hyprsunset identity

# Set gamma to 50%
hyprctl hyprsunset gamma 50
# Increase gamma by 10%
hyprctl hyprsunset gamma +10

This can be used by other software to change the temperature throughout the day, or to adjust perceieved monitor brightness, such as with the following Hyprland keybinds:

bindel = ,XF86MonBrightnessDown, exec, hyprctl hyprsunset gamma -10
bindel = ,XF86MonBrightnessUp, exec, hyprctl hyprsunset gamma +10