(PHP 4 >= 4.0.1, PHP 5)
imagecolorclosesthwb — Get the index of the color which has the hue, white and blackness nearest to the given color
Esta função não está documentada, somente a lista de argumentos está disponível.
An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
Value of red component
Value of green component
Value of blue component