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Chroma Key Green Screen
A fullscreen chroma-key backdrop for basic keying in video calls, streaming, and casual video production. Uses the industry-standard chroma green (#00B140) by default, with blue and magenta alternatives for when your subject is wearing green or standing near foliage.
How to use it
- Position the screen behind your subject, with even lighting on the backdrop and no glare or shadows crossing it.
- Go fullscreen so no browser chrome interrupts the color.
- In your keying software (OBS, Premiere, Final Cut, DaVinci Resolve, or your video call app's background effect), select the chroma key color by sampling directly from the screen rather than assuming a preset.
- Switch to blue or magenta if your subject's clothing or surroundings share too much green.
Frequently asked questions
Will a monitor really work as a chroma-key green screen?
Reasonably well for casual use. It won't match a dedicated fabric or paper backdrop in evenness across a large area, since a screen is smaller and glossier, but for a webcam-distance shot it keys out cleanly in most video software. For a full-body or large-set shoot, a physical backdrop still works better.
Why would I use blue or magenta instead of green?
Green is the default because it's rarely present in skin tones or clothing, but it becomes a problem if your subject is wearing green or sitting near a lot of foliage. In that case, blue is the standard alternative. Magenta is useful when both green and blue appear somewhere in the shot.
What settings should I check in my keying software?
Most software (OBS, Premiere, Final Cut, DaVinci Resolve) has a color picker for the key color. Sample directly from the screen rather than assuming a preset green. Even, diffused lighting on the backdrop with no glare matters more than the exact shade.
The green, blue, and magenta values here match the standard chroma-key colors used in broadcast and film keying software, not arbitrary shades. That choice is rechecked against current keying-software defaults, such as OBS and vMix, whenever those programs update their presets.
About the creator
Ready Utilities was founded by Cedrick Reese, a retired veteran and web developer who enjoys building free, user-friendly online tools that simplify everyday tasks. Read more →