HP PCL/PJL reference (PCL 5 Color) - Technical Reference Manual

3-14 Using Palettes EN
Device CMY Palettes
Bits/Index = 1
Bits/Index = 2
Bits/Index = 3 through 8
Index Color
0White
1Black
Index Color
0White
1Cyan
2 Magenta
3Black
Index Color
0White
1Cyan
2 Magenta
3Blue
4Yellow
5Green
6Red
7Black
n > 7 Black