dart:html

setFillColorHsl method

Sets the color used inside shapes. h is in degrees, 0-360. s, l are in percent, 0-100. a is 0-1.

Source

void setFillColorHsl(int h, num s, num l, [num a = 1]) {
  this.fillStyle = 'hsla($h, $s%, $l%, $a)';
}