You would have to use another series as the range. Unfortunately, there isn't a simple way to break apart an axis into colored ranges. It might be a neat feature to have something like an IGRangeOverlay that behaves like an IGOverlay, but instead of a line, shows an area. At the moment, the only way to have such ranges is to use another series as the first series in the chart. You could either try a StackedColumnSeries or a couple of RangeAreaSeries. Ranges can share your existing Y axis, but not the X axis.

    IGHighLowSeriesDataSourceHelper *dsh1 = [[IGHighLowSeriesDataSourceHelper alloc]initWithHighValues:@[@10,@10] andLowValues:@[@0,@0]];

    IGRangeAreaSeries *fill = (IGRangeAreaSeries*)[_chartView addSeriesForType:[IGRangeAreaSeries class] usingKey:@"fill" withDataSource:dsh1 firstAxisKey:@"fillXAxis" secondAxisKey:@"y"];

    IGCategoryXAxis *fillAxis = (IGCategoryXAxis*)[_chartView findAxisByKey:@"fillXAxis"];

    fillAxis.labelsVisible = NO;