What does Neel mean?
From the Sanskrit नील (nīla), 'dark blue, indigo, sapphire'. A genuine classical colour word, also the root of 'neelam' (sapphire). Note: the similar-looking English/Irish name Neil (from Gaelic Niall) is a separate, unrelated name.
What does Om mean?
From Sanskrit Om (ॐ), the sacred primordial sound and mantra regarded in Hindu tradition as the essence of the universe. Used as a name it carries that whole spiritual weight.