lumMod and lumOff

How does lumMod , lumOff affect the color, Can anyone tell how to add the lumMod and lumOff values to get the desired colour

It's pretty straightforward in standard HSL calculations (like http://www.bobpowell.net/RGBHSB.htm).

lumMod = Luminance * val,
lumOff = Luminance + val.

Just make sure you cap the resulting value in RGB to either 0 or 255 if the result is above or below those numbers.

Hi, Thanks for the reply. The problem is solved.