private void UpdateUI()
{
_conversionMethods.ConvertHexadecimalToRGB("#" + ktxtHexColourValue.Text);
klblRGBOutput.Text = $"RGB Value: Red: { _conversionMethods.GetRed() }, Green: { _conversionMethods.GetGreen() }, Blue: { _conversionMethods.GetBlue() }";
pnlPreview.BackColor = Color.FromArgb(_conversionMethods.GetRed(), _conversionMethods.GetGreen(), _conversionMethods.GetBlue());
}