You need to find reviews of your laptop to see how color accurate the laptop screen actually is. Sure you can look at the laptop's specs (assuming such information is provided, but those are just specs and not "real life" accuracy.
You need a device called a colorimeter to properly calibrate your laptop's screen. Be aware that a colorimeter can only improve color accuracy so much. A screen that has not been designed with color accuracy in mind, will very likely still have poor color accuracy after it is calibrate. Below is an example of a colorimeter.
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