SeedRandom[3];DensityHistogram[RandomVariate[MultinormalDistribution[{-1,1},{{1,-1.4},{-1.4,4}}],1000],{{1/2.5},{1}},ChartBaseStyle->EdgeForm[Directive[Opacity[0.5],White]],PlotRange->{{-5,4},{-6,8}},ColorFunction->"Rainbow",ImageSize->400,AspectRatio->1/GoldenRatio,ChartLegends->Placed[Automatic,Right]]