Off-base and Off-color

Off-base adjective - Located outside a military base.

Off-color and off-base are semantically related. in improper topic. In some cases you can use "Off-color" instead an adjective phrase "Off-base", when it comes to topics like different from standard or norm, not normal.

Off-color adjective - Hinting at or intended to call to mind matters regarded as indecent.

Off-base and off-color are semantically related. Sometimes you can use "Off-base" instead an adjective phrase "Off-color".