There are two types of light that you handle every day: Additives and Subtractives. If you’re viewing this on a computer screen, you are looking at additive light. If you print this and read it on paper, you are dealing with subtractive light.

Additional lights are projected lights, and consist of the primary colours Red, Green, and Blue. That is why when you are really close to your television, you see red, green, and blue pixels, or light spots. The computer screen produces the light which is then received by your eyes. Digital signage is additional light. For help choosing colours for your Signage Exeter, go to https://exeter.nettl.com/signs/

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Subtractive light is a light that is reflected and consists of primary colours Red, Blue and Yellow. Technically, if you wear a green shirt, and the shirt looks green to you, that’s because green is the only colour of light reflected from your shirt and into your eyes.

Scientifically-speaking, it’s simpler to think of your colours in three different parts: Hue, Saturation, and Luminance.

Hue is what you might already know as “colour.” Red, orange, yellow, green, blue and purple are all hues.

Saturation is how “strong” the colour is. To further explain, imagine grass outside your home in summer. The grass is very strong, bright green. When summer fades, and autumn comes, green loses a little colour.

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Luminance is how much white or black is mixed with your colour. You might already call colours light and dark; this is the lighting. Blue, for example, turns into “baby blue” as the lighting increases. When the orange lighting decreases, it turns brown.