A Guide To Colour

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RGB Colour Mode

RGB is the colour scheme that is associated with electronic displays, such as CRT, LCD monitors, digital cameras and scanners. It is an additive type of colour mode, that combines the primary colours, red, green and blue, in various degrees to create a variety of different colours. When all three of the colours are combined and displayed to their full extent, the result is a pure white. When all three colours are combined to the lowest degree, or value, the result is black. Software such as photo editing programs use the RGB colour mode because it offers the widest range of colours.



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CMYK Colour Mode

Printers print colour onto paper using the CMYK colour mode only. This is a four color mode that utilizes the colors cyan, magenta, yellow and black in various amounts to create all of the necessary colors when printing images. It is a subtractive process, which means that each additional unique color means more light is removed, or absorbed, to create colors. When the first three colors are added together, the result is not pure black, but rather a very dark brown. The K colour, or black, is used to completely remove light from the printed picture, which is why the eye perceives the colour as black.



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Pantone Spot Colour

Used when printing Litho on our Heidelberg Speedmaster Press we can accurately mix from the Pantone range. PANTONE is the only internationally recognised colour communication system. You can specify PANTONE Colours with confidence even if your manufacturing is half a world away. All new colours have been specially formulated to print using a uniform ink film thickness, making them easily matched on press. Pantone colours can of course be replicated using all four process colours.