At which solstice is the earth's axis more tilted?

I've tried googling this, but I can't find an answer. In short, what I want to know is at which solstice the angle of the earth's axis is greater. For instance, is the northern hemisphere more tilted towards the sun in June than the southern hemisphere is tilted towards the sun in December? Or is the southern hemisphere more tilted towards the sun in December than the northern hemisphere is tilted towards the sun in June?