Why is the canvas and monitor screen display so much darker in the Final Cut Pro interface?

The final cut software we use. The default color space is RGB color information. If the color space of the material you imported is linear color information (such as the default color space of Quick time format mov files is linear color space). After importing into final cut. (Final cut itself is RGB color information) will appear much darker. So you just need to change the color space to RGB color information when exporting the clip.