The traditional light sources – fluorescent and incandescent – have their colour light and temperature given by their physical properties. In their case the possibilities of RGB mixing are very narrow compared to LED technology. The LED arrays does provide this possibility and the designers should be able to use the colour mixing to the highest possible extent to accentuate the desired effect.
The RGB mixing uses the simple theory of additive colour mixing: the intersection of the colours creates new secondary colours while the combination of all three makes a white. Different combinations allow for different results in the colour spectrum.
The rapidly developing technology and advances add to the traditional RGB mix to provide even fuller light and remove drawbacks of the traditional RGB combination. The newer elements add amber LEDs to the mix, providing warmth. The other possibilities are white LED elements, including tunable white for different purposes. The effect of the new advances depends on the ability to mix in the new elements correctly for a given purpose.
Amber LEDs for example are less pronounced than the basic RGB, making the colour mixing trickier. Too strong whites can make the light seem too harsh and artificial and that is not always a desired effect. In RGBW elements extra white LEDs are used, allowing to achieve higher quality mixing and ability to provide pastel colours.
Moreover, the dynamic control of the lighting can change according to the season, purpose or time of day. The lighting in the bar for example can provide intimacy one evening and strong, brave colours during the disco night next evening. The shops can choose their colour mix according to the type of the clothes collection currently being sold. Even the white colour can be set up differently according to the requirements of a given locale. The same dynamic effects can be used in domestic environment, ranging from pure illumination to decoration to mood setting, with a very simple control system.
From a ranking point of view, RGB mixing in administrative environment is either present or absent and therefore can only reach either zero or maximum rating. No in-between steps are possible as this is a binary choice.