---
name: "xsct"
section: "1"
platform: "linux"
package: "xsct"
version: "2.3-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/xsct"
---

# xsct(1)

X11 set screen color temperature

## NAME

xsct - X11 set screen color temperature

## SYNOPSIS

**xsct** \[options\]  *\[temperature\]* *\[brightness\]*

## DESCRIPTION

**xsct** sets the screen's color temperature.

## OPTIONS

- **-h, --help**

  Display usage information and exit

- **-v, --verbose**

  Display debugging information

- **-d, --delta**

  Shift temperature and brightness by temperature and brightness value

- **-s, --screen N**

  Zero-based index of screen to use.

- **-t, --toggle**

  Toggle between night and day temperature.

- **-c, --crtc N**

  Zero-based index of CRTC to use.

- *\[temperature\]*

  Black body temperature\
   If the value is 0, xsct sets the color temperature to the default of 6500\
   If no arguments are passed, xsct estimates the current display temperature and brightness

- *\[brightness\]*

  Linear brightness between 0.0 (inclusive) and 1.0 (inclusive). The default value is 1.0 if no parameter is passed.

## AUTHOR

xsct is based on sct by Ted Unangst \<tedu@openbsd.org\>

## SEE ALSO

[redshift(1)](/redshift/1.md), xtemp(1)