GRA 323 Lecture Notes - Johann Wolfgang Von Goethe, Subtractive Color, Cmyk Color Model
12 Mar 2014
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Document Summary
Introduction to colour (november 14 th , 2013) Lighting conditions impact how we see colour. Metamerism (phenomenon where 1 colour looks different in 2 different lighting conditions) Additive colour systems: system of white light, rgb light creates white, tv"s and monitors work this way, medium is projected light, cmy are intermediary colours to rgb. Subtractive colour system: system of colour pigments, cmy= k, mixing 2 colours changes the wavelength to produce a new colour, rgb are intermediary, absence of colour= black. Goethe"s colour wheel: created by johann wolfgang von goethe, rby, not best for colour mixing, great for understanding relationships. The 5th colour: paper/substrate is the 5th colour, effects printed image, simulate paper colour on screen, proofs simulate paper colour, view>proof setup>custom. Colour memory is bad for humans therefore creating many problems in terms of colour matching. Colour characteristics: hue (colour, saturations (purity of colour, value (lightness/darkness of a colour)
