Visible colors can be arranged in a circle, commonly known as the color wheel. The primary colors of light, red, green and blue (RGB), form a triangle on the color wheel. In between the primary colors are the secondary colors, cyan, magenta and yellow (CMY).

colors. When the sun comes out after a rainstorm, water droplets in the air can act as prisms and display the arc of colors in the sky we see as a rainbow.

If the visible portion of the rainbow is divided into thirds, the predominant colors are blue, green and red. These are the primary

colors of light. Visible colors can be arranged in a circle, commonly known as the color wheel. Blue, green and red form a triangle on the color wheel. In between the primary colors are the secondary colors, cyan, magenta and yellow, which form another triangle.