Build A Variable Length Array

I am trying to do is to build an array from a series of cells that may or may not contain text.

For example cells A1:A6 may be equal to red, orange, yellow, green, blue and purple,
but each cell may also be blank.

So I might also have blank, blank, yellow, blank, blue, purple.

Is there a way I can make an array of just {yellow, blue, purple}? and then the next time it may be {red, blue}

Or can I index only cells that have text?

In the end, I just need a way to make a selection from only those cells that have text.