Green is the go-to because it doesn’t match any natural skin tone or hair color, meaning no part of an actor will be edited out through chroma key. When a green costume or prop is essential, a blue screen is often substituted.

Why green or blue colors are used in VFX (Visual effects) for live action shots in film making and video production

1. In order for the effect to work, the background must use a color that isn’t used elsewhere in the shot and green is nothing like human skin tone.

2. Because green and blue are both well away from orange-red on the hue circle, both are suitable for chroma-keying people.

3. Colors such as “chroma key green” and “digi green” are toned to be ideal for use with green screens. Alternatively, blue screens can also be used, especially for replicating night scenes.

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