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How Do We Mix Color ?

How Do We Mix Color ?. How do determine complimentary color ?. How Do We Mix Colored Light?. There are two types of color mixing: 1. The mixing of lights (additive). 2. The mixing of pigments (subtractive). What are Additive Primary Colors ?. Red, Green and Blue

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How Do We Mix Color ?

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  1. How Do We Mix Color? How do determinecomplimentarycolor?

  2. How Do We Mix Colored Light? • There are two types of color mixing: 1. The mixing of lights (additive). 2. The mixing of pigments (subtractive).

  3. What are Additive PrimaryColors? • Red, Green and Blue • Notice white in the center

  4. Additive PrimaryColorArithmetic • Red+ Green = Yellow • Green + Blue = Cyan • Red + Blue = Magenta

  5. How DoesYour Old TV Work? • Three electron beams strike three different phosphors • At a distance you don’t notice the individual colored dots

  6. How DoesYourLaptopScreenWork? • Each dot is a device or pixel is made up of 3 cells (Blue, Red and Green) • Light behind screen passes through the cell or pixel to combine into one color

  7. LaptopScreenContinued • The brightness of the three colors determines the final color of the pixel • Instead of phosphors, the laptop uses a Liquid Crystal Display (LCD)

  8. How Do WeDescribe the Color White? • Primary additive + Secondary additive = White; Considered Complimentary Colors • Blue + Yellow = White • Blue comes from 1/3 of the spectrum and Yellow contains light from the other 2/3 of the spectrum (Red + Green)

  9. ComplimentaryColorArithmetic • Secondary + Primary = White • Yellow+ Blue = White • Magenta + Green = White • Cyan + Red= White

  10. How Do WeDetermineComplimentaryColorsfrom White Light? • White – Primary = Secondary • White – Blue = Yellow • White – Red= Cyan • White – Green = Magenta

  11. YourTurn… Primary & Secondary Additive ColorsSmartBoardExercise

  12. How Do WeViewColoredObjects in Colored Light? Red light Shirt looks red Shorts look black Shirt looks black Blue light Shorts look blue

  13. Homework

  14. What are SubtractiveComplimentaryColors • Blocks and their shadows appear as different colors depending on the color of light that illuminates them.

  15. What are SubtractiveComplimentaryColors • If white light falls on a pigment that absorbs red light, the light reflected appears cyan. • Subtract a color from white light and you have the complementary color.

  16. What are SubtractiveComplimentaryColors • White light passes through all three transparencies, the light of all frequencies is subtracted and black is produced • Adding Cyan, Magenta and Yellow together will produce Black

  17. YourTurn… ColorMixingWorksheet

  18. WhyDoesMixing Blue and YellowPaintGive Us Green?

  19. Colorwith Magazines and Newspaper • A printing press prints each page with four different inks or pigments, CMYK (Cyan-Magenta-Yellow-Black) • Each color is transferred to paper with a different plate • The plate transfers tiny dots of color to the paper • The overlapping dots plus black produce many colors

  20. CMYK Printing

  21. Homework • Read pp. 554-558 • Answer Ques. 1, 2, 4, 26 .

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