Is is red Mahogany Varathane or red Mahogany stain. Once you put the first coat of a colored varathane on it, you seal the wood, and it gets no darker.
I usually use a variety of stains to get the level of darkness I want. To get a dark mahogany, I often have to use part ebony. Play with a test piece of wood. After it is stained, then put a finish on it- clear varathane, tung oil, etc.
you get the most color with the first application on fresh wood.
This is what I use
