Function toHexString

toHexString(val, prefix?): string
Converts a hex number value to a hex string with customizable prefix.

Example
```
toHexString(16777215) // Returns '#ffffff'
toHexString(0, '0x') // Returns '#000000'
```
Parameters
- val: number
  
  Hex number value.
- prefix: HexStringPrefix = '#'
  
  Output string prefix.
Returns string
Converted hex string.
- Defined in core/utils.ts:104