Hue/Saturation/Lightness
The Hue/Saturation/Lightness filter lets you change the hue, saturation, and lightness values of an image or channel. Hue represents color; saturation represents color depth or richness; and lightness represents the overall percentage of white in an image.
You can access this adjustment from the Adjustments inspector, the Adjust menu, or by pressing Command + Shift + U.