Two birthday colors, side by side
Give two dates and the finder shows both colours, the blend in the middle and the harmony palette they have in common. It is a colour comparison, not a compatibility verdict.
Pairing questions
Does this score our relationship?
No. It compares two colours. Anything you read into that is yours to decide.
What if both birthdays give the same colour?
Then the blend is that colour too, and the pair is simply identical. It happens on shared birthdays.
Can I use the blend as a gift colour?
Yes. The blend hex is listed above and copies like any other colour.