Check if your screen's colors wash out or invert when viewed from an angle. Important for laptops and secondary monitors.
This will launch a full-screen test pattern. Follow the on-screen instructions to evaluate your display.
Different display technologies (IPS, TN, VA, OLED) handle off-axis viewing very differently.
TN Panels often show severe color inversion when viewed from below.
IPS & OLED Panels should retain their color accuracy and contrast even at extreme angles, though IPS may show slight brightness loss.