1 - THREE COLOUR MIXING AND MATCHING Flashcards
1
Q
three colour mixing principle
A
can make almost any colour by mixing together three ‘primary colours’
- pigments and light sources
- used in movie projectors, digital display devices (phones etc)
- also used in print coloured pictures using pigments
2
Q
additive colour mixture
A
- mix light from different sources together = get more light
- mixture is a sum of the components
- brighter, the more light you add
3
Q
green + blue light (emitters)
A
= cyan
4
Q
green + red light (emitters)
A
= yellow
5
Q
blue + red light (emitters)
A
= purple
6
Q
red + blue + green light (emitters)
A
= white
7
Q
light primaries
A
- red, green and blue
- can be mixed together to make any colour except black
- mix in different proportions
- not the only possible set - only the most commonly used
- primaries can be any three coloured lights mixed together that can create all possible light sensations
8
Q
screen primaries
A
- pg 13 for diagrams
- black = emitter turned off
- red = red emitters only
- green
- blue
- they appear as tiny bars on the screen
- blend together as they’re so small
- can vary intensity of the emitter
9
Q
subtractive colour mixture
A
- mixing pigments
- the more pigment you add, the more illuminating light each component pigment absorbs
- each pigment absorbs different from others (makes them different pigments)
- the more pigment = the darker it becomes (subtract more light)
- only need 3 primaries to produce any colour
- except white and shades lighter than the primaries
- to make paint you need to mix in with white
10
Q
pigment primaries
A
- usually cyan (slightly greenish blue)
- magenta (reddish purple)
- yellow
- all three together = black
- too much pigment so absorbs too much light
- used in printing
11
Q
colour matching
A
- finding the exact mixture of primaries that when mixed are indistinguishable from the original sample
- can be light or pigment
12
Q
blue + yellow
A
paint = green
light = white
13
Q
red + green
A
paint = brown
light = yellow
