Red emphasizes urgency and decision, so I used it principally for Emergency buttons, “No” response, and medical warnings.

Green emphasized important confirmation buttons. Additionally, I used green for COVID-19 (as opposed to red) to reduce fear association for elderly population.

Orange gives priority as a brighter color but communicates less urgency than the color red, so I used this for Test Readings interface.

Blue was utilized for Mental Wellness buttons for a calming interface; I also used a hierarchy of blue shades to convey elements dependent on time/approval.

Gray in a lighter shade conveys professionalism without being overly clinical. The background color was a good medium between pure white (which may cause eye strain for seniors) and black, which could feel unapproachable.

Yellow is associated with energy, so I used it for the Medication subcategory to motivate users to check this feature regularly.

Purple was used for Long-term conditions/Chronic disease; I wanted cool-toned colors for all main menu items to prioritize red for strictly urgent items.