Plot3D[Re[Sin[x+I y]],{x,-2Pi,Pi},{y,-2Pi,2Pi}, ImageSize->400,ClippingStyle->{Orange,Blue},Mesh->None,ColorFunction->"AvocadoColors",Axes->False,Boxed->False,PlotLegends->{Placed[BarLegend[Automatic,LabelStyle->{14,Gray}],Right],Placed[SwatchLegend[{Blue,Orange},{"> 50","< -50"},LegendMarkerSize->Large,LegendMarkers->Automatic,LabelStyle->{Bold,18,Gray}],Top]}]