Contrast Ratio Calculation

[jsfi]

Hi,
I am working with your library in a current project and need contrast ratio calculation between two colors.

Would you consider a pull request to add this functionality?

Thank you for your work on the library.

[Qix-]

Hi there!

Can you elaborate a bit on exactly what you'd like to have added?

[jsfi]

Sorry if this was a bit short.

I believe that the calculation of the contrast ratio between two colors as defined by the W3C would be a good addition to the library.

Lea Verou implemented this calculation for a Web-Tool and I adapted it to use it with your library.

So my question was if you would be interested that I add my adaption inside the library or do you consider it out of scope.

[Qix-]

I would consider it out of scope simply because it's a destructive calculation. For instance, you can derive a ratio between two colors, but a single color cannot result in a contrast ratio and vice versa a contrast ratio cannot be used to create a specific color, hence landing this outside the scope of this library.

Unless, that is, I'm misunderstanding the concept here (which is entirely possible).

[jsfi]

What you described was my main concern why I wanted to ask before doing anything.

Thank you for your time.

[Qix-]

No problem! Thank you for the issue :) 👍