Print vs screen

Assigning colour to adjustable document.

Subtractive

Screen

Additive

Print

CMYK vs RGB

RGB-Image on screen

Image view gamut

A typical CRT gamut.
The grayed-out horseshoe shape is the entire range of possible chromaticities. The colored triangle is the gamut available to a typical computer monitor; it does not cover the entire space. The corners of the triangle are theprimary colors for this gamut; in the case of aCRT, they depend on the colours of the phosphors of the monitor. At each point, the brightest possible RGB color of that chromaticity is shown, resulting in the bright Mach bandstripes corresponding to the edges of the RGB colour cube.

RGB red/green/blue- screen

Duotone- two colours, print with continuos tone.

Spot colour- One or more specially mixed colours.

RGB image- Image view- Gamut reading- to see the image in CMYK

In offset printing, a spot color is any color generated by an ink(pure or mixed) that is printed using a single run.

The widely spread offset-printing process is composed of four spot colors: Cyan,Magenta, Yellow, and Key(black) commonly referred to asCMYK. More advanced processes involve the use of six spot colors (hexachromatic process), which add Orangeand Green to the process (termed CMYKOG). The two additional spot colors are added to compensate for the inefficient reproduction of fainttints using CMYK colors only. However, offset technicians around the world use the term spot color to mean any colour generated by a non-standard offset ink; such as metallic,fluorescent, spot varnish, or custom hand-mixed inks.

Specially mixed colours- As apposed to a result of a CYMK or RGB mix.

Mono- One colour, like greyscale (Monochrome)

Hexographic Print- Six colours

Prints different on shiny coated paper than on matte.