This tool lets you combine Red, Green, and Blue light to make any RGB color.
The sliders control the saturation levels of each color component, ranging from 0 (none) to 255 (full saturation).
The slider value (saturation level) of each pure color component is shown in the side rectangles.
The center shows the resulting RGB color - the combination of the Red, Green, and Blue light.
Some notes on common color combinations are provided below:
Pure Red, Green, or Blue → turn up that color, leaving the other two at 0.
All at 255 (full saturation of all colors) → White
All at 0 (no color) → Black
Equal saturations of each → Gray
Red + Blue → Purple
Red + Green → Yellow
Green + Blue → Turquoise
Dark yellow → make yellow, then reduce both red and green