Plain Screen
EN / 中文

Green — #00B140

Green screen.

Two jobs, two greens. Keying wants something around #00B140, which is what loads here. Pixel testing wants #00FF00 — type it in the hex box.

01 — Panel

The panel

Any hex works. Patterns are drawn in CSS, so nothing blurs when the panel goes fullscreen.

#00B140 · Flat · 1920 × 1080

Colour
Any hex works. Patterns are drawn in CSS, so nothing blurs when the panel goes fullscreen.
Pattern

Link to this colour

The address bar already holds the colour and pattern. Send this to someone and they get the same panel.
02 — Uses

What this colour is for

Chroma key base
Don't key off pure green. It clips on camera and puts green spill on skin. #00B140 is closer to what broadcast gear expects.
Green subpixel check
Same routine as red: full brightness, fullscreen, slow sweep. Type #00FF00 first.
Lens and sensor tests
A flat green field shows colour fringing at the edge of a lens faster than a chart does.
Night reading
Dim green was the cockpit compromise: readable, and it doesn't wreck night vision the way white does.
03 — Step by step

Testing a screen with it

  1. Pick your green

    Keying: leave it as is. Testing: #00FF00. Some keyers want a specific shade — use theirs.

  2. Light it evenly

    For keying, an evenly lit flat green is the whole trick. Two soft sources, no hot spot.

  3. Check the edges

    Hair and motion blur are where keys fail. Nothing on this page fixes that.

04 — FAQ

FAQ

Is #00FF00 the right keying green?

No. It's the right testing green. Broadcast key green sits near #00B140 because pure green blows out under lighting.

Can I key off a monitor instead of a cloth?

You can, badly. Screens flicker against a camera shutter and the colour shifts the moment you move off-axis.