"It is the same color."
Translation:Es el mismo color.
If mismo comes after it means 100% the same. So the same color would've had to be ripped off the previous object. Another example. Leemos el mismo libro. Means we read the same book, but most likely two different copies. Leemos el libro mismo means you read the same actual book. It's more common for mismo to come before the noun.
- el mismo color = the same colour
- el color mismo = the colour itself