The options that use hexadecimal notation are MAC addresses and Color.
How to explain
MAC addresses: MAC (Media Access Control) addresses, which uniquely identify devices on a network, often use hexadecimal notation to express their values. For instance, a MAC address like 00:1A:2B:3C:4D:5E is represented in hexadecimal.
Color: Hexadecimal notation is frequently used to denote colors in web development and graphic design. For example, "#FF0000" represents the color red in hexadecimal format.
IP addresses and website URLs are typically represented in decimal and alphanumeric formats respectively, not in hexadecimal notation.