Greenfaulds High School Colour Theory 2. Color is the light reflected from a surface. Visible light is made up of the wavelengths of light between infrared.

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Greenfaulds High School Colour Theory 2

Color is the light reflected from a surface. Visible light is made up of the wavelengths of light between infrared and ultraviolet radiation (between 400 and 700 nanometers). Because water and dust particles in the air scatter light, objects seen at great distance lose contrast, sharpness, and brightness, and have a blue-ish tint. This effect is called Atmospheric Perspective. What is Color?

Additive Model RGB, Light Color Models Subtractitive Model CMYK, Pigment

Hue The ‘color’ of the color. Red, Orange, Yellow, Green, Blue, Indigo, Violet Value Lightness (tint) or darkness (shade) of a color. Saturation (Chroma) Intensity of the hue in the color. Desaturated colors tend to look gray. Describing Color

HSV Color HSV Cone from a Mac HSV Color Picker from a PC HSV Color Picker

LAB Designed to be device independent. Represents the entire visible light spectrum L = Luminance A = Green to Red B = Blue to Yellow Other Color Models YUV Color Model of European PAL TV standard. Developed for backwards compatibility with Black-and-White TVs Y= Luminance U = Red - Y V = Blue – Y

Color Temperature COOLCOOL WARMWARM Temperature can be measured absolutely, or relatively. For example, yellow-green is warmer than cyan- green, but both are cool colors. Absolute color temperatures are denoted below: Cool colors appear more distant than warm colors due to atmospheric perspective

Color Contrast Contrast Of Hue Contrast Of Value Contrast Of Saturation Low Contrast High Contrast

Color Contrast For Text Colors with strongly different hues are easy to distinguish. But reading one on top of another can strain the eyes. A contrast of hue is not enough to make text readable. It needs a contrast of value or saturation, too. Not Good! This is better.

Color Interaction The colors surrounding a color affect its appearance.

Common Color Schemes AchromaticMonochromatic ComplementaryAnalogousTriadic Chromatic Grays

Color Scheme Examples bbc.com fox.com

The Meaning of Color Caress Moisturising Body Wash The moisturising lather and wonderful fragrance pamper your senses and leave your skin feeling silky soft. Irish Spring Original Helps keep you feeling clean and fresh. Great invigorating scent Dial Antibacterial Soap Over 10x more effective at killing disease-causing germs than ordinary liquid hand soaps.

PowerPoint Presentation. 2003