Colour picker showing HSV values (HTML version)

I was finding it a faff to test colours in Gamemaker (using make_colour_hsv), so this is designed to quickly choose colours and see what their hsv values are.

Mouse x and mouse y control hue and saturation (so bottom right is a maximally saturated red) & the buttons on the right change the value. 

Left click to make a panel/swatch of the current colour.