Would washing bleach lighten the areola?

Bleach for clothing is NOT made for skin and could cause serious tissue damage AND worsening pigmentation.
Please do not attempt using bleach on your skin for any area or any purpose.
Seek the advice of a board certified dermatologist.

you can lighten it or medical tattoo it.

this is post inflammatory hyperpigmentation/melasma/discoloration that needs cosmelan or enlighten peels at home which we can do virtually and send to your home along with aerify peels regularly, vivatia foam, restorsea 10x, faith essence serum, and cosmelan 2 cream (see link).

Hyperpigmentation from any type needs a combination approach of peels like cosmelan, enlighten and aerify,  lasers like clear and brilliant and aerolase or laser genesis, radiofrequency like venus viva, and constant skin care and sun protection.  Bimonthly facials with silk peel dermalinfusion is essential to hydrate, exfoliate and infuse vitamins and antioxidants into the skin.  If you have acne you can do additional treatments and peels to get more improvement.  I suggest a formal consultation with an expert in lasers and peels. Best, Dr. Emer.