More Contrast?

I wanted to paint my bathroom vanity a slightly darker shade of gray/blue than the walls.
But, even after the cabinet paint dried, they look pretty much exactly the same to me.  What do you think?

I think the difference is a wee bit too “slight.”
Suggestions that do not include buying new paint? (I have almost a full gallon of this color, so it could be mixed with something.)  Keep in mind that I want the vanity to look old.