Skip to main content



Sets the color used to draw lines and borders around shapes. This color is either specified in terms of the RGB or HSB color depending on the current colorMode. The default color space is RGB, with each value in the range from 0 to 255. The alpha range by default is also 0 to 255.


stroke(v1, v2, v3, [alpha])
stroke(gray, [alpha])


v1red or hue value (depending on the current color mode)
v2green or saturation value (depending on the current color mode)
v3blue or brightness value (depending on the current color mode)
alphaopacity of the background relative to current color range (default is 0-255) (Optional)
grayspecifies a value between white and black
valuesan array containing the components of the color