Product Design Sketching Chromatic Theories. Color Spectrum The range of colors seen by human eye is...
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Transcript of Product Design Sketching Chromatic Theories. Color Spectrum The range of colors seen by human eye is...
Product Design Sketching
Chromatic Theories
Color Spectrum
The range of colors seen by human eye is the “visible color spectrum”
Color Models
RGB Model Additive model (as that
of light) The 3 primary colors add
up to form the white color
CYMK Model Subtractive model (as
that of paint pigment) Cyan, Yellow, Magenta
and Black add up to become the black color
Basic Attributes of a Color
A color can be denoted by its HSB value, i.e. the 3 attributes:
Hue Tint of the color Location of the color in
the color spectrum Saturation
Intensity or amount of color pigment
Brightness / Lightness Light value of the color Intensity or amount of
light
HSB Values
You may use the colour picker of Adobe PhotoShop to identify the HSB values of your colour pencil
Adjust hue and saturation
Adjust brightness
Saturation vs. Brightness
saturation
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Colour Physiology and Psychology
Our perception of colour is governed not only by Physics but also by the
biological structure of our eyes and the wiring of our brain
Colour Perception
The color of an object being seen is determined by:
Local color (of the object’s surface material)
Ambient color (of the light source)
Reflected color (from another object’s nearby)
Color Perception
What we see is not ‘real’ but ‘perceived’
Colour Perception
Dithering is a technique used in computer graphics to create the illusion of color depth with a limited color palette
In a dithered image, colors not available in the palette are approximated by a diffusion of colored pixels from within the available palette. The human eye perceives the diffusion as a mixture of the colors within it.