here is the basic values for rgb,
Code:
   Color Red Value Green Value Blue Value 
Black           0                      0            0 
Blue            0                       0           255 
Green          0                      255        0 
Cyan           0                      255         255 
Red             255                   0           0 
Magenta      255                   0            255 
Yellow         255                   255        0 
White          255                  255         255