VB6 Color changes on extended monitor

Hello

I am tried below color codes for background color of the form and the color of form appears ok on built in monitor but when i pull the form to extended monitor (second monitor) the background color changes. How can i make the color stay same on both monitor. I appreciate any suggestions.

RGB(173, 142, 38)
'Below code is Dark Khaki
RGB(189, 183, 107)

Regards
Harris