Afraid of RGB

Measuring 145 metres from top to bottom and counting 38 floors, Dexia Tower is the third highest building in Brussels.In the middle of the Rogier Square the building shines like a beacon over the town.
The Tower is visible from several major traffic arteries in the capital and is situated precisely in the middle of the Mint Square.It has a trapezium-shaped footprint covering an area of 4,400 square metres.The building has a total of 6,000 windows.Behind each of 4,200 windows there is a lighting installation consisting on average of 12 light bulbs, each with three LEDs – a green, a red and a blue – that can be combined into a complete colour palette.

The project displays tomorrow’s temperature, cloudiness, precipitations, and wind, by using colors and geometrical patterns to display these real-time data provided by the RMI, Royal Meteorological Institute of Belgium.

The main information is constituted by tomorrow’s temperature which is compared to the monthly temperature average defining a value expressed by a color in which the tower is illuminated. The color scale is based on the common association between cold and warm colors to temperature, ranging from violet ( -6° or colder ), blue ( -4° ), cyan ( -2° ), green ( monthly average ), yellow ( 2° ).

Due to the economic and financial crisis, the lighting of the Dexia Tower has been drastically reduced.
Between sunset and midnight the tower lights burn only 10 minutes per hour. No new lighting project is planned.

Via archdaily