Monitor/screen rarely able to show actual/true color. There's two factor in play here, colour gamut and also colour accuracy.

72% NTSC color gamut means the display is able to show up to that extend of colours.


Cheapo display will have a narrow colour gamut, which means there's a limit of colours it can display. Take a look at the sRGB profile as compared to the bigger profile.


There's also colours that's indistinguishable for human's eyes.


For colour accuracy, right out of the factory, the displays are likely still showing inaccurate colour (unless it's factory/professionally tuned). For example, a photo of red apple may appear orangeish on your display and so, depending on it's colour profile, especially if you're on some cheapo old monitor.

Though there's tools out there to benchmark and tune the colour profile of your display so it will be more accurate and closer to the real colour it should display. Its mostly for professionals usage where colour accuracy is crucial for their works.