CanConvertToHex.cs

bool CanConvertToHex(object value)
{
    return value switch
    {
        byte or sbyte or ushort or short or uint or int or ulong or long or IntPtr or UIntPtr => true,
        _ => false
    };
}

bool CanConvertToHex(object value) => value is byte or sbyte or ushort or short or uint or int or ulong or long or IntPtr or UIntPtr;

Nice! Why did I not think of this

or IntPtr or UIntPtr

or nint or nuint