Based on our record, EpicRuler should be more popular than Css Inspector. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Yes, looks very similar: https://cssinspector.com/. - Source: Hacker News / almost 2 years ago
You can check it out on https://epicruler.com. Source: about 2 years ago
For EpicRuler I'm using this code to get the luminance of a pixel, which I think could be used in your case too, you just have to convert the RGB part to HEX:. Source: about 2 years ago
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