Dell U2211H Monitor - Manual (Page 21)

Press to increase the green shade of the video image.
Press to increase the purple shade of the video image.
NOTE: Hue adjustment is available only for video input.
Saturation
This feature can adjust the color saturation of the video image. Use or to adjust the saturation from '0' to '100'.
Press to increase the monochrome appearance of the video image.
Press to increase the colorful appearance of the video image.
NOTE: Saturation adjustment is available only for video input.
Reset Color Setting
s Reset your monitor color settings to the factory settings.
Display Settings Use the Display Settings to adjust image.