Green & Blue Screen Paint
Green & blue screen paint
Paint a green screen that actually keys
A clean key is won or lost on the wall. Rosco makes two purpose-built keying paints — Chroma Key Paint and DigiComp® HD — engineered for the high luminance, strong saturation and dead-flat finish that hardware-store “green” can’t give you. Here’s how to pick the right one, get the numbers right, and lay it down so it keys the same every time.
Chroma Key Paint or DigiComp® HD?
Both are purpose-made keying paints with an ultra-matte finish. The difference is the workflow you’re optimising for. Most studio green/blue screens start with Chroma Key Paint.
Chroma Key Paint (5710 / 5711)
High luminance and strong saturation with a matte, camera-friendly finish — a reliable, repeatable key for general capture.
Choose for: green/blue screen studios, broadcast rooms, education and corporate media spaces, photo stages and infinity walls.
DigiComp® HD (5750 / 5751)
Manufactured to precise luminance and RGB targets for a bright, narrow-bandwidth key that’s simple to light and easy to pull — less rotoscoping and post clean-up.
Choose for: VFX-heavy pipelines and virtual production, or any job where your post team asks for DigiComp standards specifically.
Rule of thumb
Start with Chroma Key Paint for most green/blue screen studio builds. Step up to DigiComp® HD when your VFX or virtual-production pipeline needs its controlled digital standards.
Green or blue?
Pick the key colour that appears least in your foreground — wardrobe, props and set — and that your camera handles best.
Green
The default for digital and HD capture — most modern camera sensors are more sensitive to green, so it lights brighter for less power and keys cleanly. Choose green unless your foreground has a lot of green in it.
Blue
Preferred when shooting film (the blue emulsion layer is more sensitive) and whenever the foreground contains a lot of green — foliage, green wardrobe, or a subject that would spill or conflict against a green wall.
Both Chroma Key Paint and DigiComp HD come in green and blue. Avoid matching the background to a major foreground element (for example, a blue costume against a blue screen).
Technical specifications
| Chroma Key Paint (5710 / 5711) | DigiComp® HD (5750 / 5751) | |
|---|---|---|
| Best for | General green/blue screen production & studios | Digital compositing, VFX & virtual production |
| Colours | Green (5711) & Blue (5710) | Green (5751) & Blue (5750) |
| Finish | Matte | Ultra-flat — no sheen or gloss |
| Chemistry | Water-based, vinyl acrylic | Water-based, vinyl acrylic; ready to use from the can |
| Coverage | ~300 sq ft/gal (~27.9 m² per 3.79 L, ~7.4 m²/L) | ~300 sq ft/gal (~27 m² per 3.79 L) |
| Coats | Thin, even coats until uniform (typically 2) | 2 coats for uniform colour |
| Dry / recoat | Touch-dry ~30 min at 24°C; recoat 1–2 hrs | ~30 min to 1 hr, depending on conditions |
| Surfaces | Clean, dry, primed porous surfaces | Most porous surfaces: wood, wallboard, plaster, concrete |
| Prime with | Rosco Tough Prime – White (porous surfaces) | Prime porous / unprimed surfaces for even colour |
| Apply with | Brush, roller or spray gun | 3/8″ nap roller, or airless / HVLP spray |
| VOC | Max 50 g/L | Max 50 g/L |
| Sizes | 0.95 L, 3.79 L, 19 L | 3.79 L, 19 L |
Figures per Rosco published data. Coverage varies with surface porosity, film thickness and method — porous or unprimed surfaces drink more. Do not apply Chroma Key Paint below 10°C.
How to paint a green screen
The paint can be perfect and the key can still be messy if the wall isn’t prepped and lit evenly. Work through these steps.
Test the full system on a sample first
Surface, primer, paint and lighting all affect the key. Paint a test panel of your actual wall build, light it the way you will on the day, and confirm the key pulls clean — then document what you did (product, primer, coats, date) before committing to the whole studio.
Prep the surface
Surface must be clean, dry and free of oil and grease. Fill and sand so the wall reads flat under soft light.
Prime porous surfaces
Prime porous substrates — use Rosco Tough Prime – White as the final prime coat. Unprimed surfaces key patchy and uneven.
Stir, don’t shake
Stir thoroughly for uniform colour. Use straight from the can; if you must thin, do it minimally — over-dilution hurts evenness.
Apply thin, even coats
Brush, roller or spray. Overlap strokes and keep a wet edge to avoid lap marks. Build to uniform colour, typically two coats.
Recoat & cure
Touch-dry around 30 minutes at 24°C; recoat in 1–2 hours. Let it flash off properly before you light it for camera.
Light it evenly
Aim for flat, even illumination across the whole background and keep shiny floors and objects from throwing colour spill onto talent.
How much paint will you need?
Pick the paint and enter your wall area. Estimates only — porous and unprimed surfaces use more.
Based on the 3.79 L (1 gallon) tin. Plan for the primer coat separately, and round up for touch-ups.
Not sure? We’ll spec it with you Tell us your studio and we’ll size the jobBuild the whole chroma system
Most keying problems are mismatches — wall vs floor vs seams. Rosco’s system is built so the pieces key together.
Chroma key flooring
Reversible blue/green floor for when you don’t want to paint the floor — fast to lay and matched to the paint.
See chroma flooring →ChromaGaff™ & keying tape
Matching green and blue tape for seams, wall-to-floor joins, cable runs and tidy edges.
See keying tapes →Tough Prime – White
The recommended final prime coat under keying paint on porous walls, for even colour.
About Tough Prime →Green & blue screen FAQ
The questions we get before people commit. If yours isn’t here, just call or email us.
Can’t I just use flat green paint from the hardware store?
Chroma Key Paint or DigiComp HD — which do I need?
Green or blue screen?
Do I need to prime first?
How much do I need and how many coats?
Will the paint fix a bad key on its own?
Ready to order?
Shop the range, or talk to us first if you want the colour and quantity checked for your studio.
Chroma Key Paint
Green (5711) & Blue (5710). 0.95 L, 3.79 L and 19 L.
DigiComp® HD
Green (5751) & Blue (5750). 3.79 L and 19 L.
Building or repainting a green screen?
We’re the exclusive Rosco distributor for Australia and New Zealand. Tell us your surface, wall size and whether it’s for general production or VFX, and we’ll point you to the right paint, colour and quantity.