Finance UI

Color in financial data visualization: beyond the red-green traffic light

Financial dashboards default to red-for-loss, green-for-gain because the convention is universal and understood. But this binary traffic light system breaks down in complex financial contexts: it excludes 8% of male users with color vision deficiency, it fails when more than two states need representation, and it creates perceptual overload in dense data grids. A more sophisticated approach uses the traffic light as a baseline and builds a full semantic color system around it that works for all users and all data states.