The MINIMUM for deer hunting with a gun, regardless of the season, is a solid blaze orange vest. Those bird vests with just the orange pockets and shoulder patches DO NOT count as many think.
To pheasant hunt the minimum is an orange hat that is at least 50% orange.
Ditto to the above on ground blinds. We have done this for several years on our farm just so the neighbors know to not lob a slug in our direction. It works pretty well.
I always wear at least an orange vest and a hat. When you are walking over a hill what is the first thing a hunter will see? Yup, your head. Mine is going to be wearing an orange hat!
Hope this helps.