Colour Variations

Duotones, tritones, and quadtones are greyscale images printed with two, three, and four inks. In these images, coloured inks, rather than different shades of gray, are used to reproduce tinted grays.Duotone increases the tonal range of a greyscale image. Duotone creates a kind of mood for the image and makes it look warm or cold and doesn't have the tonal range problem that monotone has.
Spot colour is a specifically mixed colour that isn't a standard offset printing ink its usually used to print colours outside of the colour gamut of CMYK. using just a spot colour can be cost effective but using it with CMYK can make the production costs more expensive. Pantone is the usual spot colour system used in the UK.
spot colour looks quite nice on a greyscale image but not so keen on using it as a monotone colour as it doesnt really give much tone.


Monotone images are greyscale images printed with a single, non black ink. Like spot colour it can be very cost effective. The image i have chosen to use doesn't really work that well in monotone with a single colour because of the lack of tonal range. In greyscale i feel the image works well. Greyscale is very similar to monotone as only shades of grey are used however due to the range greyscale can usually give a clearer image than monotone.

CMYK is the most used colour print system. it uses the colours Cyan, Magenta Yellow and Key (black). This has a higher colour range than duo and monotone. Its a subractive colour model where the more colour you add the darker it becomes.

RGB has a higher gamut than cymk but is only a screen based colour model with the colour values been different from screen to screen usually the colour has to be managed by a colour management. The colour model is an additive colour model where the more colour you add the more lighter it becomes.