There are many elements to take into account if you want your logo to be well-looking online. First, it must be simple and flexible. For example, avoid any unnecessary details that would not appear on your Favicon. If needed, create different versions of your web logo. If you have a combination mark logo, you could have a version with your business name and another with the symbol only. It is recommended to use your logo in a PNG format for the header of your website.
The choice is yours, but sans serif fonts are used on the web most of the time. Indeed, this type of font is considered more modern and accessible. You can notice that many important web businesses (Google, YouTube, Spotify) use sans serif fonts on their logo.
According to the meaning of colors, gray is often associated with modernity and new technologies like the web. On its part, blue is related to knowledge. During the creation of your web logo, keep in mind to choose a main color associated with the values or message you wish to convey. You can choose any color; it only needs to represent your business well.
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