Convert Color to a Number

Question

Is there any site that can do the following:
1. i give 2 colors, e.g: very light green and very dark green.
2. then i "tell" the software that the light green is the number 1, and the dark green is number 5.
3. now, whenever i give the software any green type color, it can rate it from 1 to 5.

Is there any site that can help me do such a thing ?

Answer 1

Mirielle will it work if let's say:
My min color(1) is light purple and max color is dark purple(5). And if i put the rgb of the colors as x and y and run the following code, what will be the final answer? What will the output be? I mean, what will it represent?