Using the same color but the result is different

Design help Custom code
#1

Hi embed a script but adjusted the color to be the same as the background, however it appears differently.

Any idea why & how it can be fixed?

Here is my site Read-Only: [LINK]1
(how to share your site Read-Only link)

#2
#3

Here is the custom code
eventhough using 1F262A in both custom code and webflow the result is different

Screenshot 2022-07-21 at 21.25.55
Screenshot 2022-07-21 at 21.25.551264×1224 83.9 KB

Similarly with Lottie files
in the preview mode it works
Screenshot 2022-07-21 at 21.29.23
Screenshot 2022-07-21 at 21.29.231684×656 4.63 KB

but when I publish is different
Screenshot 2022-07-21 at 21.24.02
Screenshot 2022-07-21 at 21.24.021512×582 4.21 KB

if anbody have any idea why it isn’t match, would be appreciated