- Hope, optimism, promise of good things, or luck
- Wishing or yearning for happiness or good things
- A feeling of attaining the unattainable
- A different experience or "other world," as in the world "over the rainbow" or "at rainbow's end"
- Celebrating your uniqueness or the differences among people
- A wide range or full spectrum (of emotions, choices, etc.), as a rainbow shows a rainbow of colors