Color is subjective. If you know anything about color, you know that the way it looks depends on the color that is next to it. (If you’ve every purchased the “perfect shade” of wall paint, to only go home and realize it looks like baby poop, you know what I mean!)
There is an interesting color challenge online at X-Rite. Simply move the color chips in ascending order. Some of it depends on your monitor- but it does stress the point that there are subtle differences between shades of color.
Here is the Color Challenge. See how you rank!