Color Theory
description
Transcript of Color Theory
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Color TheoryColor Theory““color is a visual sensation perceived color is a visual sensation perceived by the eye and the mind due to the by the eye and the mind due to the
activity and vibration of light”activity and vibration of light”
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General Characteristics• Color can create different moods.
• Color Symbolism: people associate colors with various concepts
• A person’s culture may influence their association.
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Colors of the Spectrum• Sir Isaac Newton (1666)• no one color predominates• colors always appear in the same
order ROYGBIV• colors extend beyond the spectrum:
• Infrared• Ultra-violet
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Absorption • “the process of taking in, as in a
colored object which absorbs certain rays of light and reflects other rays giving the object its recognizable color”
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Reflection• “the return of light waves from
surfaces; the bending or folding back of a part upon itself”
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Chromatic Colors• “a color having hue; a color of the
visible spectrum (ROYGBIV)
• the colors of the spectrum, plus those produced by their mixtures
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Achromatic Colors• “a color not found in the visible
spectrum; a neutral color such as white, black, gray, and silver, and gold (for decorative purposes)”
• the neutral colors
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Dimensions of Color• Hue
• Value
• Intensity
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Hue• “the property of a color by which it
is distinguished from other colors”• used only when speaking of the
unadulterated chromatic color• refers to a pure color
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Primary Hues• Red
• Yellow
• Blue
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Warm Hues• “a color which appears in the
spectral band, characterized by long wave-lengths; a color which makes an object appear closer and larger; a color which reflects warmth”
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Cool Hues• “blue, green, purple (AKA violet) or
any intermediate pigmentary hue in which they predominate; a receding hue which creates the illusion of distance from the observer; a color of short wave-lengths”
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Color Wheel’s Division into Warm & Cool Hues• Complements: “directly opposite
hues on the color wheel; any two pigmentary hues which, by their mixture in equal quantities, produce gray”
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Value• “the lightness or darkness of a hue”
• every hue is capable of being darkened to a point above black
• every hue is capable of being lightened to a point below white
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Intensity• (chroma)• “the brightness or dullness of a
hue”• a pure color is at full intensity• hues at full intensity are brilliant• low intensities are soft and pleasant
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Pigment TheoryPigment TheoryThe Prang SystemThe Prang System
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Pigment• “a coloring matter which can be
applied to an object, when combined with some type of vehicle”
• The earliest pigments came from various earths, minerals, or vegetable dyes.
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Chemical Pigments• Range is more narrow.• Fade or bleach.• Are not pure colors.• Are not stable.• Absorb light rays when they are
mixed together.
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Classes of Hues• Primary• Secondary• Intermediate• Tertiary
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Primary Hues• “three pigmentary hues; red, yellow,
and blue which can be combined to make all other hues”
• Cannot be produced by mixtures of other hues.
• Equilateral triangle is the symbol used to locate the position of the primary hues on the color wheel.
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Secondary Hues• “equal mixture of 2 primary pigmentary
hues (orange, green, and purple)”• Lie midway between the 2 primary hues
which produce it.• An inverted equilateral triangle depicts
the relationship of the primary and secondary hues.
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Intermediate Hues• “a pigmentary hue produced by
mixing in equal quantities, a primary hue with its adjacent secondary hue on the color wheel”
• Are located midway between the primary and secondary hues which produce them.
• There are 6 intermediate hues.
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Tertiary Hues• “the hue which results from the
mixture of 2 secondary pigmentary hues or an unbalanced proportion of complements with the warm or cool hue predominating”
• 2 families of colors: browns and slates
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Monochromatic Hues• “variations of one hue; tints, tones
and shades of one hue”
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Tint• “ a hue into which various
quantities of white are mixed”• As the quantity of white is
increased, the hue is weakened.• Changes the value of a hue.
– HUE + WHITE = TINT
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Tone• “a hue mixed with either a small
quantity of gray or the complement of the hue, resulting in dulling the hue”
• Changes the intensity of the hue.– HUE + GRAY (COMPLEMENT) = TONE
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Shade• “ a hue into which various
quantities of black are mixed; the darkened hue”
• Changes the value of the hue.– HUE + BLACK = SHADE
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• Once white, black or gray (complement) is added to a hue, it is no longer a hue, it is a tint, a tone, or a shade.
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Analogous Hues• “two or more hues which have the
same hue in common”
• Are adjacent to each other on the color wheel.
• Contain the same hue.
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Color Wheel• “a circle in which the primary,
secondary, and intermediate hues are arranged in orderly intervals”
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Complements• “directly opposite hues on the color
wheel”• Always involve a warm hue and a
cool hue.• When mixed in equal parts they
result in gray.• Are the greatest contrast in hues.
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Juxtaposition• “(simultaneous contrast) any two
hues seen together which modify each other in the direction of their complements”
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After-image• “psychological; a visual impression
remaining after the stimulus has been removed”
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Color in LightColor in LightIlluminationIllumination
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Types of Light• Incandescent Light (white light):
“the illumination resulting from the glowing of a heated filament”
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Types of Light (cont’d)• Fluorescent Light: “the
illumination produced by a tubular electric discharge lamp; the fluorescence of phosphors coating the inside of a tube”
• Warm white; warm color; cool white
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Dimensions• Hue: “the property of a color from
which it is distinguished from other colors”
• Brilliance: “brightness; the quantity of illumination passing through a color transparency
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Dimensions (cont’d)• Saturation: “a visual aspect
indicating the vividness of the hue in the degree of difference from a gray of the same lightness”
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Methods of Mixing• Additive Method: “white light can
be produced by the mixture of the 3 primary hues: red, blue and green
• The complement of any primary hue is the mixture of the 2 remaining primary hues (the complements are secondary hues)
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Methods of Mixing (cont’d)
• The secondary hues of the additive method are the primary hues of the subtractive method.
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Methods of Mixing (cont’d)
• Subtractive Method: “involves filtering out various colors in the illumination by using different colors of transparencies”
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Methods of Mixing (cont’d)
• The primary hues of the subtractive method are the secondary hues of the additive method.
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Effect of Colored Light on Colored Objects
• Colored light: “illumination of an identifiable hue”
• Emphasis: “using the same color of light as the color of the object”
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Effect of Colored Light (cont’d)
• Absorption: “the process of taking in, as in a colored object which absorbs certain rays of light and reflects other rays giving the object its recognizable color”
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Effects of Colored Light (cont’d)
• Conversion: “the color of an object being converted or completely destroyed when one color of illumination strikes an object of a completely different color”