Each pixel's color is a blend of 1 of 256 shades of Red, 1 of 256 shades of Green, 1 of 256 shades of Blue. Each shade of each color is represented by a number ranging from 0 to 255.
Now, let's explore color using the Color Picker. Click on the foreground color on the tool palette.
Examine the Color Picker.
H = Hue – the color itself over the entire spectrum available in a 0-360 degree scale.
S = Saturation – the intensity of the selected hue from 0-100%.
B = Brightness – darkness to lightness from 0-100%.R = Red as in Rgb.
G = Green as in rGb.B = Blue as in rgB.
