darktable employs a fully color managed workflow:
Input color specifications are taken from embedded or user-supplied ICC profiles or – in the case of raw files – from a library of camera-specific color matrices.
darktable automatically reads the display profile of your monitor (if properly configured) for accurate on-screen color rendition. Multi-screen setups are fully supported as long as a system service like colord is in place and properly set up to inform darktable of the correct monitor profile.
Output files can be encoded in one of darktable’s built-in profiles, including sRGB and Adobe RGB, or into a color space supplied by the user as an ICC profile.