![Additive color theory[RGB] [Mixing of
different wavelength of light (no
absorption or reflection of light)]
• Additive color theory is a concept that
explains how colors are created by
combining different intensities of light. It is
primarily used in the context of digital
displays, such as computer screens,
televisions, and stage lighting. In additive
color theory, colors are generated by adding
or mixing different wavelengths of light
together.](https://image.slidesharecdn.com/chapter3colortheory-241205200304-ddbb8a3f/85/Chapter-3-color_theory-pptx-file-full-lecture-3-320.jpg)
![Subtractive color theory[CMYK][A
pigment absorb certain wavelength of
light and then reflect another certain
wavelength of light]
• It is based on the principle that pigments or dyes
selectively absorb certain wavelengths of light
while reflecting or transmitting others. When
different pigments are combined, each pigment
absorbs a portion of the incident light, and the
remaining light that is reflected or transmitted
creates the perceived color.](https://image.slidesharecdn.com/chapter3colortheory-241205200304-ddbb8a3f/85/Chapter-3-color_theory-pptx-file-full-lecture-8-320.jpg)
Chapter 3 color_theory.pptx file full lecture
- 3. Additive color theory[RGB] [Mixing of different wavelength of light (no absorption or reflection of light)] • Additive color theory is a concept that explains how colors are created by combining different intensities of light. It is primarily used in the context of digital displays, such as computer screens, televisions, and stage lighting. In additive color theory, colors are generated by adding or mixing different wavelengths of light together.
- 4. Key aspects of additive color theory include: 1.Primary Colors: In additive color mixing, the primary colors are red, green, and blue (RGB). These colors are chosen because they correspond to the three types of color- sensitive receptors in our eyes—red cones, green cones, and blue cones. By combining different intensities of red, green, and blue light, a wide range of colors can be achieved.
- 5. 2. Color Mixing: Additive color mixing occurs when different intensities of light are combined. When all three primary colors (red, green, and blue RGB) are mixed at their maximum intensity, they produce white light. When no light is present, the result is black. 3. Secondary Colors: By mixing pairs of primary colors, secondary colors are created. Mixing red and green light produces yellow, mixing red and blue light creates magenta, and mixing green and blue light generates cyan.
- 6. 4. Color Intensity: In additive color theory, the intensity or brightness of a color is determined by the amount of light present. Increasing the intensity of any of the primary colors (red, green, or blue) will result in a brighter and more vibrant color. 5. Color Display Systems: Additive color theory is the basis for many color display systems, including RGB displays used in digital devices. In these systems, individual pixels emit or filter red, green, and blue light to create the desired color when viewed collectively.
- 8. Subtractive color theory[CMYK][A pigment absorb certain wavelength of light and then reflect another certain wavelength of light] • It is based on the principle that pigments or dyes selectively absorb certain wavelengths of light while reflecting or transmitting others. When different pigments are combined, each pigment absorbs a portion of the incident light, and the remaining light that is reflected or transmitted creates the perceived color.
- 9. Key points of the subtractive color theory include: 1. Primary Colors: In subtractive color mixing, the primary colors are cyan, magenta, and yellow. These colors are chosen because each pigment absorbs one of the primary additive colors (red, green, and blue) of light. When combined, the three primary colors theoretically absorb all visible light, resulting in a neutral or black appearance.
- 10. 2. Secondary Colors: By mixing primary colors together, secondary colors are created. Mixing cyan and magenta produces blue, magenta and yellow create red, and yellow and cyan generate green. 3. Color Mixing: When two or more pigments are mixed together, their respective wavelengths of light absorption are combined. As a result, the mixed color appears as the combination of the reflected or transmitted light that is not absorbed by the pigments.
- 11. 4. Color Subtraction: The term "subtractive" in subtractive color theory refers to the fact that as pigments are mixed, the absorbed wavelengths of light are subtracted or removed from the overall color spectrum. The more pigments are added, the more light is absorbed, resulting in a darker and less saturated color. The subtractive color model is in contrast to the additive color model. It is used in commercial printing.
- 12. RYB colour model • RYB (an abbreviation of red– yellow–blue) is a historical set of colors used in subtractive color mixing and is one commonly used set of primary colors. It is primarily used in art and design education, particularly painting.
- 14. The RGB color model • The RGB color model is an additive color model in which red, green and blue light are added together in various ways to reproduce a broad array of colors. The name of the model comes from the initials of the three additive primary colors, red, green, and blue.
- 15. The RGB color model • The main purpose of the RGB color model is for the sensing, representation, and display of images in electronic systems, such as televisions and computers, though it has also been used in conventional photography.
- 16. CMYK Color model • CMYK refers to the four ink plates used in some color printing: cyan, magenta, yellow, and key (black). The CMYK model works by partially or entirely masking colors on a lighter, usually white, background.
- 18. The color wheel was invented in 1666 by Isaac Newton, who mapped the color spectrum onto a circle. The color wheel is the basis of color theory, because it shows the relationship between colors. Being familiar with the color wheel not only helps you mix colors when painting, but in adding color to all your art creations. The color wheel fits together like a puzzle - each color in a specific place.
- 19. What is a color wheel? A color wheel is disk-shaped and divided equally into 12 sections, each displaying a different color according to its "pigment" values. It is based on three colors; red, blue, and yellow.
- 21. Here we consider the RYB color model for the color wheel
- 22. Primary Colors Primary Colors Primary colors are not mixed from other elements and they generate all other colors. • Red • Yellow • Blue
- 23. Secondary Colors Secondary Colors By mixing two primary colors, a secondary color is created. • Red + Yellow = Orange • Yellow + Blue = Green • Blue + Red = Purple
- 24. Intermediate, or Tertiary, colors are created by mixing a primary and a secondary. •red-orange •yellow-orange •yellow-green •blue-green •blue-purple •red-purple Intermediate Colors Intermediate Colors
- 25. The principles of color mixing let us describe a variety of colors, but there are still many colors to explore. The neutral colors contain equal parts of each of the three primary colors. Black, white, gray and sometimes brown are considered "neutral”. Neutral Colors Neutral Colors
- 26. Dimensions of Color • HUE The name given to a color. RED ,YELLOW ,VIOLET • VALUE The lightness or darkness of a color. • INTENSITY/ CROMA The brightness or dullness of a color. • TINT Made by adding white to a color so that it is lighter. HUE + WHITE = TINT Tints are lightened colors. Always begin with white and add a bit of color to the white until the desired tint is obtained. • SHADE Made by adding black to a color so that it is darker. HUE + BLACK = SHADE Shades are darkened colors. Always begin with the color and add just a bit of black at a time to get the desired shade of a color. This is an example of a value scale for the shades of blue.
- 27. Color values are the lights and darks of a color you create by using black and white (‘neutrals”) with a color. This makes hundreds of more colors from the basic 12 colors of the wheel. • white + color = tint • color + black = shade
- 28. Tints are lightened colors. Always begin with white and add a bit of color to the white until the desired tint is obtained. This is an example of a value scale for the tints of blue. Tints Tints
- 29. Shades are darkened colors. Always begin with the color and add just a bit of black at a time to get the desired shade of a color. This is an example of a value scale for the shades of blue. Shades Shades
- 30. Color Schemes are a systematic way of using the color wheel to put colors together… in your art work, putting together the clothes you wear, deciding what colors to paint your room….. monochromatic, complementary, analogous, warm and cool.
- 31. “Mono” means “one”, “chroma” means “color”… monochromatic color schemes have only one color and its values. The following slide shows a painting done in a monochromatic color scheme. Monochromatic Monochromatic
- 32. This non-objective painting has a monochromatic color scheme - blue and the values (tints and shades) of blue.
- 33. Complementary colors are opposite on the color wheel provided a high contrast - if you want to be noticed wear complementary colors! Complementary Complementary
- 34. This painting has complementary colors and their values - blues and oranges.
- 35. The analogous color scheme is 3-5 colors adjacent to each other on the color wheel. This combination of colors provides very little contrast. Analogous Analogous
- 36. Analogous colors are illustrated here: yellow, yellow-green, green and blue-green.
- 37. Warm colors are found on the right side of the color wheel. They are colors found in fire and the sun. Warm colors make objects look closer in a painting or drawing. Warm Warm
- 38. This is an illustration of the use of warm colors - reds, oranges and yellows.
- 39. Cool colors are found on the left side of the color wheel. They are the colors found in snow and ice and tend to recede in a composition. Cool Cool
- 40. Note the cool color scheme in this painting (greens, purples and blues).
- 41. Thank You