If you are assuming that you, as a human, are behaving as a perfect blackbody radiator at room temperature (273K or 0 degrees Celsius), the temperature of your surroundings would have to be the same as your body temperature for thermal equilibrium.
For a blackbody to emit thermal radiation, its temperature must be above absolute zero (0 Kelvin or -273.15 degrees Celsius). At room temperature, you emit infrared radiation in the form of heat. So if you were a blackbody at room temperature (273K), your surroundings would have to be at the same temperature (273K) in order to achieve thermal equilibrium.
In other words, you would need to be in an environment where the temperature is 273K or approximately 0 degrees Celsius for your emitted radiation to be balanced by the absorbed radiation from your surroundings.