Jai Sri Ganesha,
Not that easy to describe the truth of Sri Ekadasi,
In one of its facet, it could be related to the truth of Lord Vishnu,
That embodiment of Lord Vishnu to help the devotees,
Lord Vishnu possesses all that filled and empty spaces, empty spaces are limitless, and their color resembles to that of Lord Vishnu, deep blue,
May Lord Bless all,
Thanks, please