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Transcript of COLOUR THEORY
Colour is everywhere!
Three Properties of Colour
The Colour Wheel
Visually organizes and shows the important relationships between colors.
Basic Colour Groups
For example these boxes all have a reddish hue.
Another term for colour.
The darkness or lightness of a colour can be controlled by tints and shades.
A color mixed with white.
A color mixed with black.
Mixing complementary colours (opposites) has the quickest effect on intentisty.
Can also be referred to as SATURATION. Pure HUES can be mixed together to mute or dull their intensity.
Can mix to make all of the other colors in the colour wheel. Cannot be made by mixing any colours together.
Made by mixing a primary colours together.
A combination of a primary and a secondary colour. Red-Orange, Blue-green, etc.
Monochromatic refers to a colour scheme that is primarily dark and light values of ONE colour.
Colours located close together on a colour wheel.
A color mixed with gray.
Colours located opposite one another on the colour wheel.
Any three colours that are equally spaced on the colour wheel.
Colour schemes are specific sets or groupings of colour
It can effect the way we think, feel, or even act.
Created with light
Created with Ink
When we mix colours using paint, or through the printing process we are using subtractive colour method. Subtractive colour mixing means that one begins with white and ends with black: as one adds colour, the result gets darker and tends towards black
RECAP FOR PHOTOSHOP
The Traditional Colour Wheel
The Photoshop Colour Wheel
The traditional color wheel is used for paints and other pigments.
The Photoshop color wheel is based on the way colors are mixed in light, and therefore on a monitor screen.
CMYK and RGB:Subtractive vs. Additive Colour Models
CMYK stands for Cyan, Magenta, Yellow and Key colour (which is black). CMYK is the colour model used for printing presses. It is based on the chemistry of mixing translucent printing inks rather than paint. It is called subtractive because if you mix the three primary colours (cyan, magenta and yellow) together, you get black (in theory; in reality you need to added pure black ink to get real black.)
RGB stands for Red, Green, Blue. It is based on the way the light mixes on a computer screen. It is called an additive colour model because if you add the three primaries (red, green and blue) together, you get pure white light.
Recap for Photoshop
Tints, Shades & Neutrals
A tint is a colour in which white has been added to a pure colour. The more white, the lighter the tint. Tints are otherwise known as pastels.
A shade is a colour in which black has been added to a pure colour. The more black, the darker the tint.
A neutral is the combination of complementary colours. Complementary colours are those that sit opposite each other on the color wheel. Neutrals are more natural colours and tend to be brownish.
The Traditional Colour Wheel Colours
The Photoshop Colour Wheel Colours
Recap Colour Combinations
Complementary colours are often used together in a composition to create excitement. Each color in the pair makes the other seem more vibrant.
Analogous colours are those which sit next to each other on the colour wheel.
NOW CHECK OUT THESE WEB SITES
If we are working on a computer,the colours we see on the screen are created with light using the additive colour method, additive colour mixing begins with black and ends with white: as more colour is added, the result is lighter and tends to whiten.
How Many Colours Does Photoshop Have at its core?
You now know that photoshop works in RGB Colour, thats Red Green and Blue, but each colour can be represented in 256 shades, say, 256 shades of red, 256 shades of green, and 256 shades of blue? If you do the the math, 256 times 256 times 256 equals roughly 16.8 million. That’s 16.8 million colors you can now create! And that’s exactly what you get with an 8-bit image – 256 shades of red, 256 shades of green, and 256 shades of blue, giving you the millions of possible colors you usually see in a digital image. So 8-bit images give us 256 shades each of red, green and blue, and we got that number using the expression "2 to the exponent 8", or "2 x 2 x 2 x 2 x 2 x 2 x 2 x 2", which equals 256.
Photoshop can work in 8-bit or 16-bit , but what does that mean?
What about 16 Bit image's,We can do the same thing to figure out how many colours we can have in a 16-bit image. All we need to do is calculate the expression "2 to the exponent 16", or "2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2", which, if you don’t have a calculator handy, gives us 65,536. That means that when working with 16-bit images, we have 65,536 shades of red, 65,536 shades of green, and 65,536 shades of blue. Forget about 16.8 million! 65,536 x 65,536 x 65,536 gives us an incredible 281 trillion possible colours!
Now That's awesome!