This applet allows you to mix three colors of light (red, green, and blue) and see the resulting color of light. This is an example of additive color mixing and is representative of emission; it is not the same as mixing colored paints (an absorptive, or subtractive process). Drag the sliders to new positions or alter the values in the text boxes to adjust the mixture. The number at the bottom represents the amount of red, green, or blue present in the mixture - 1 means 100% of the specific color and 0 means 0% of the specific color.
If the colors of this applet appear odd to you, check the color calibration page.