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This short article will include a list of practical apps that allow for you to use a computer software based mostly, customizable colour filter on your monitor’s screen. You can use these purposes to set color temperature for your show and choose hotter colors to cut down eye pressure by filtering out blue gentle. These programs are also popularly acknowledged as “night light” applications.

GNOME Shell Night Light-weight

GNOME Shell attributes a devoted night mild solution which can be enabled and personalized from system options. If you are making use of any GNOME Shell based Linux distribution that acquired a new release of GNOME Shell in the final few of decades, your Linux distribution ought to have a night time light attribute created-in. GNOME Shell Night time Gentle has all the attributes you would count on from a display screen filter application. You can use it to established your preferred colour temperature and then either manually activate the overlay or timetable it. Its scheduling aspect will allow you to pick up a personalized time frame or you can plan it to instantly activate at dawn and sunset timings dependent on your existing area.

Night time mild is a section of the GNOME Shell process configurations and there doesn’t seem to be to be a standalone app for it, so you simply cannot set up it in other desktop environments.

KDE Night time Colour

KDE’s Evening Shade is a color temperature utility baked into the primary system settings. It performs very related to GNOME’s night time gentle tool and makes it possible for you to manually set a color temperature. It can also immediately implement shade temperature based mostly on sunset and sunrise timings for your latest spot or you can timetable it to activate and deactivate at a specific time period.

Evening light-weight is section of the KDE method configurations and there does not seem to be to be a devoted application for it, so you can’t set up and use it in other desktop environments. In KDE based mostly Linux distributions, you can obtain it positioned at Configurations > Display and Keep an eye on > Evening Coloration submenus in principal procedure options.


RedShift is a totally free and open source command line and graphical software package that can be utilised to modify display temperature by overlaying a software dependent filter on your display. It can routinely modify colours primarily based on time of the working day, largely at twilight and dawn (dependent on your recent location). You can personalize colour temperature working with its many command line possibilities. It also offers a manual method that can be applied to persistently use a colour filter on your display screen. The graphical application is confined to a technique tray indicator and it just provides a way to toggle the filter. In addition to coloration temperature, it also allows you to modify brightness based on the working day night time plan picked by you.

You can put in RedShift in Ubuntu by utilizing the command specified below:

$ sudo apt put in redshift

RedShift is available in formal repositories of all key distributions. You can also get executable binaries from its GitHub site.

To set a mounted color temperature, use the next command (switch 5000 with your have wished-for price):

To get rid of RedShift layer and reset it wholly, use the next command:

To automatically timetable RedShift at dawn and sunset, use the command under. It will select your present-day place based mostly on process settings.

For more information and facts on RedShift command line alternatives, operate the next two commands:

$ man redshift
$ redshift -h


Gammy is a free of charge and open source tool that enables you to transform both brightness and color temperature of your display. It periodically requires a screenshot of your show and analyzes it to routinely utilize a brightness and shade temperature filter. You can also timetable it to activate at particular situations and it supports a number of monitor setups as nicely. Gammy also comes with a command line interface if you desire employing shell instructions and scripts.

Gammy does not seem to provide precompiled deals for any Linux distribution. Having said that, you can conveniently compile it following guidance readily available listed here. You can also search for Gammy packages in official and unofficial repositories readily available for your Linux distribution.


Sct or “set colour temperature” is a absolutely free and open resource command line utility that enables you to transform the colour temperature of your show using a software package based resolution. It doesn’t occur with a lot of bells and whistles and does not have an alternative to routine automated application of coloration temperature. It supplies only a single command that accepts your ideal colour temperature as a numeric benefit.

You can install Sct in Ubuntu by making use of the command specified underneath:

Sct is available in formal repositories of all main distributions. You can also get executable binaries by compiling resource code accessible on its GitHub page.

To established a mounted color temperature, use the subsequent command (switch 5000 with your very own preferred benefit):

To take out Sct alterations and reset it entirely, use the pursuing command:

For a lot more information on Sct command line options, run the next two instructions:


These are some of the best graphical and command line utilities that can be applied to modify colour temperature and brightness of your display using a software package primarily based answer. These purposes are primarily valuable if your display doesn’t have hardware controls for switching shade temperature.

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