Run the check
Compare a neutral gray and saturated color in the screen test.
Check the same image in another app and on another input source.
Review display color range and profile settings without changing both together.
Read the result
A change confined to one source points away from the panel alone.
Limits and next step
Browser colors depend on profile management and cannot certify gamut accuracy.
Repeat the check after changing one setting or connection. Keep a record of what changed before deciding whether the device needs service.