欧: Surname, Europe. It holds no actual meaning in personal names.
蓝: A hue akin to the azure of a clear sky. Above lies the vast cerulean heavens. - Du Fu.
Meaning: The name 'Oulan' is melodious and elegant, with 'Ou' conveying an international flair and 'Lan' symbolizing tranquility and vastness, giving an overall impression of freshness and sophistication.