I'm working on organizing my closet and want my clothes to go in order from dark to light. I googled some images that go from dark to light, but I'm not sure if it's right?

Here's is the image I'm currently using as a guide:

It's pretty but, does light aqua (or even green) really come before blue or purple? The same with pink before red or orange. I'm so confused.

Can anyone shed some light on what color order I should be using?

Thank you! (My closet thanks you as well).