Does unintentionally swallowing saliva mixed with blood, after the blood has come out of the teeth and been wiped away, invalidate the fast?

If a fasting person swallows their saliva, and it is free of blood, then their fast is valid. Similarly, if saliva mixes with blood and the fasting person swallows it unintentionally, their fast is not invalidated. However, the fast is invalidated if the saliva mixed with blood is swallowed intentionally.