ColorPrimary Colors

Three colors that make up all the other colors

Two types of primary colorsAdditive Primary colors (Light)Red, Green, & BlueWhen you add all of these together, you get white light!

Subtractive Primary colors (Art)Cyan, Magenta, YellowWhen you add all of these together you get black. (When you subtract all these out you get white.)

When light hits a surface:The color you see is reflected, The rest of the colors are absorbed.

(If you have a projector and a couple of mirrors, you can also project the slide and reflect the primary colors on top of each other to see the secondary colors.)

The computer screen uses RGB (Red, Green, Blue) to show colors. By adjusting the colors of the circles, you can see the different combinations of primary light colors.

ColorPrimary Colors

Three colors that make up all the other colors

Two types of primary colorsAdditive Primary colors (Light)Red, Green, & BlueWhen you add all of these together, you get white light!

Subtractive Primary colors (Art)Cyan, Magenta, YellowWhen you add all of these together you get black. (When you subtract all these out you get white.)

Red

Again, if you have a projector, project this

on a wall and get different colored

objects and see how they look under

different colored light! Make sure your

room is completely dark.Key Idea:

The color you see is the reflected color. If the paint and the light share the same color, you’ll see it. If they don’t, it will look black. So

•Blue light on purple will look blue because purple is made of blue and red. •Blue light on green will look blue because green is blue and yellow. •Blue light on red will look black because red doesn’t have any blue pigment to reflect the blue light.

Red

The rods and cones in your eyes allow you to see.

Rods detect brightness. 120 million rods in your eyes.

Cones detect color: 3 types: R, G, B 6 million cones in your eyes.