WallMatch Calibration Card

Print at 100% scale on matte white cardstock. Do not use “fit to page.”

WHITE

GRAY

BLACK

Use: Place this card flat against the wall so every patch receives the same light as the paint.

Capture: Keep glare off the page and hold the camera straight toward the wall.

Prototype accuracy note: Home printers and paper vary. A commercial neutral gray card gives more reliable calibration. This card is still useful for testing the app and reducing obvious lighting color casts.