gtk:hsv-set-color (hsv h s v)

hsv -- a gtk:hsv widget
h -- a double float for the hue component
s -- a double float for the saturation component
v -- a double float for the value component

Sets the current color in an HSV color selector. Color component values must be in the [0.0, 1.0] range. The gtk:hsv-set-color function is deprecated since version 3.4 and should not be used in newly written code.