Adept AdeptSight User Guide - Manual (Page 371)

White 255, 255, 255 0, 0, 255
Black 0, 0, 0 0, 0, 0
Middle Grey 127, 127, 127 0, 0,128
Red 255,0,0 0, 255, 128
Green 0, 255, 0 85, 255, 128
Blue 0, 0, 255 170, 255, 128
Defining a Color by its RGB values
RGB refers to a mode of describing, or quantifying, a color by its red (R), green (G), and blue
(B) values.
l
The values for R, G, and B range from 0 (no color) to 255 (maximum color)
l
White is defined by R, G, B = 255, 255, 255
l
Black is defined by R, G, B = 0, 0, 0
l The table shows the same common colors expressed in RGB and HSL
Defining a Color by its HSL Values
HSL refers to a mode of describing, or quantifying, colors by their Hue, Saturation, and Lumi-
nance values.
Hue - H
Hue is the quality of color that we perceive as the color itself, for example: red,
green, yellow. The hue is determined by the perceived dominant wavelength,
or the central tendency combined wavelengths, within the visible spectrum.
l
Hue values range from 0 to 255. These values correspond to a dis-
placement along the color spectrum starting from red =0.
l
At H=0, the color is a shade of red, at H=85, the color is a shade of
green, at H=170, the color is a shade of blue.
Saturation - S
Saturation is the purity of the color, or the grey in a color. For example a high
saturation value produces a very pure, intense color. Reducing the saturation
value adds grey to the color.
Luminance - L
Luminance is the brightness of the color, or the amount of white contained in
the color. As the value increases the color becomes lighter and tends towards
white. As the luminance value decreases the color is darker and tends towards
black.
Color Values
AdeptSight User's Guide, Version 3.2.x, Updated: 8/23/2012
Page 371