Why is the background of an html tag with the same color different in mobile and laptop?

Question

I made a header area in a web page and set its background color to #ffc755.

Problem:
When I opened this page on mobile, I noticed that the color is a little bolder.

As an experiment, I tried taking a screenshot from the mobile device and transferred that image file back to my laptop where I saw that the color was correct.

What is the reason for this and how can I fix it?

This is the picture I took on my mobile phone.
Color may vary depending on your monitor. You can check it on a laptop and on a mobile:

image link

Answer 1

I think you've answered your own question already by yourself:

"Color may vary depending on your monitor".

So I think it depends on the monitor you are looking at.
Monitors could display more/less colors, are brighter/darker, show different contrast and so on.

If you ran a mobile emulator on you desktop, then the color should not differ on mobile or on your desktop because both are displayed on the same monitor.