Abstract: Methods, systems, and storage media for determining a numerical classification of human skin color, determining one or more characteristics of skin based on images, and determining a personalized treatment plan for one or more skin conditions or issues are disclosed. The system can receive images of skin and access user profile information, such as biometric information, medical record information, and other clinically relevant information. The system can determine a classification of a skin color of the user using the image and the biometric information by providing the image and the biometric information as input to a skin color classifier. Using the skin color, the system can determine one or more characteristics of the skin in the image and, if needed, determine and provide at least one personalized treatment plan to a computing device of a user.