Blue is colour of love and spirituality. Blue light is one of seven colours in the visible light-spectre. The wave-length of blue is similar to the electromagnetic wave from throat.
Throat is centre for expression, listening – the sounds that we hear and create. We all know the feeling that something is stock in throat, it´s hard to say, difficult to let out the words, a scream or tone. Try to stand in front of a mirror, look direct into your own eyes and say loud and tender: I love you. Is it easy?

Blue has a wave length on 450-500 nm (nanno-meter), so it belongs to the fast and cold part of the electromagnetic field of the visible light.
Colours in light and material colours are two different things, but since we only have one word for both, colour, many think it is the same.

A colored surface has the property that it can reflect the full color spectrum of light, with the exception of the exact color we see, as an example blue. It means that the colour we see change character (even change colour) depending on the light.

We have attached many symbols to colours depending on culture, religion and shifting fashions. This symbolic we must regard as not factual truth about colours, but rather sense within what we individually feel by a colour and a colour sceme.
A colour appears in many variants, so we might sense a deep ocean blue very different from a lightblue pastel colour or a blue-green turkis.

Throat is posited right between heart/body and head. When the activity between heart and brain is balanced, it is easy for us to communicate with others, listen to others, easy for us to express feelings and to be understood.
If we are mostly in our busy-mind and have less contact to body and feelings, things can get blocked in throat. Blue light helps to loosen up for a block.

Throat is centre for any sort of expression: verbal, emotional, sexual, intuitive, creative, spiritual – and love. It´s the centre for balance and for the wisdom of cause-and-effect. As kids we learn that what we express has consequences and that we must be responsible for what we do. It is through throat centre we have contact with our will and power of creation.

Sometimes our head wants one thing, our heart another and then we have an inner conflict that will typical give throat problems.
Blue is in its positive aspect symbol for higher consciousness and healing, in its negative aspect for crowding, in its neutral aspect for thinking.
Blue we connect to sky, sea and water.

In western world we regard light blue as colour for baby-boys. Dark blue is regarded as royal. The virgin Maria´s dress is often clear blue in religious paintings. Blue is symbol of Truth of God and Eternity, in China blue is symbol for East. In Europe a blue flower means flight away in fantasies. Packaging for many cleaning products and soaps are blue and white to signal the clean and fresh.

“Feeling blue” is an expression for sadness, loss and grief. In astrology Taurus is light blue, Scorpio is clear blue, Sagittarius a royal blue and Aquarius a deep dark blue. In Egypt and Mexico blue colour is symbol of the divine.

Many say that white-blue painted walls in a room brings peace, relaxation and quietness to mind and soul. Blue leads us to clearance and honesty.