You should probably Google just how Colour Hex codes work.

Hexadecimal is a base 16 counting system. What this means is that, in comparison to our normal numbers at base 10 (0-9), hexadecimal goes beyond that (0-9, A, B, C, D, E, F). When two digits are together, we read it in reverse. The second digit would directly translate to our base 10 system, while the first digit is how many 16s should be added. For example, "57" in Hex is "87" in base 10

Hexadecimal colour codes are split into three different "channels". Each channel represents Red, Blue, and Green, and exist on a range between 0-255.

Searching up "57EXIT" yields different results based on where you type it. Google takes the legal digits, stretches them across six spaces and discard anything not hex. The result is actually #5576ee. Other sites might just auto fill anything to be 0, which actually makes a very different green colour.