Color Corrections with Hue/Saturation
Hue/Saturation dialog uses HSB (hue-saturation-brightness) model of the color presentation. The slider Hue shifts color position on the rainbow-colored bar at the bottom of the dialog, Saturation can increase/decrease color intensity, while Lightness changes its brightness
Doubrovski, Andrei. Photoshop 911 (2004). Design>Graphic Design>Software>Adobe Photoshop