Chroma Keying and Working with Green Screens > Creating a Key by Extracting a Range of Colours with the HLS, YUV, RGB and RGBCMYL Keyers >

# About the Different Colour Models

There are four colour models you can use.

## HLS

In the HLS Keyer menu, you set the softness and tolerance ranges using the hue, luminance, and saturation channels.

## YUV

In the YUV Keyer menu, you set the softness and tolerance ranges using the luma and chroma signals of YUV component video.

## RGB

In the RGB Keyer menu, you set the softness and tolerance ranges using the red, green, and blue channels.

## RGBCMYL

In the RGBCMYL Keyer menu, you set the softness and tolerance ranges using the red, green, blue, cyan, magenta, yellow, and luminance channels. This colour model provides subpixel resolution.

#### Related Information

- Creating a Key by Extracting a Range of Colours with the HLS, YUV, RGB and RGBCMYL Keyers
- Chroma Keying and Working with Green Screens