Step 3
Make sure that your red circle is selected and go to Object > Path > Offset Path. Enter a -25px Offset and click OK.
Select the resulting shape, replace the existing fill color with white (R=255 G=255 B=255) and go again to Object > Path > Offset Path. Enter a -25px Offset and click OK.
Make sure that the resulting shape is selected, replace the existing fill color withR=228 G=23 B=28 and go one more time to Object > Path > Offset Path. Enter a-25px Offset and click OK. Select the newly created shape and replace the existing fill color with R=22 G=77 B=157.