It depends on the monitor color profile. If I copy the screenshot into Sketch and use the eyedropper tool, the color will be #2d72d9, because I am not using an sRGB profile. If I use Sketch eyedropper to select the screenshot colors in the browser, then the color shows as #2767D4.

If you use the native system eyedropper, or even chrome inspect tools, you will see that the rendered color is actually inaccurate.