The CanvasRenderingContext2D.strokeStyle property of the Canvas 2D API specifies the color or style to use for the lines around shapes. The default is #000 (black).

See also the chapter Applying styles and color in the Canvas Tutorial.


ctx.strokeStyle = color;
ctx.strokeStyle = gradient;
ctx.strokeStyle = pattern;


A DOMString parsed as CSS <color> value.
A CanvasGradient object (a linear or radial gradient).
A CanvasPattern object (a repetitive image).


Using the strokeStyle property to set a different color

This is just a simple code snippet using the strokeStyle property to set a different color.


<canvas id="canvas"></canvas>


var canvas = document.getElementById('canvas');
var ctx = canvas.getContext('2d');

ctx.strokeStyle = 'blue';
ctx.strokeRect(10, 10, 100, 100);

Edit the code below and see your changes update live in the canvas:

A strokeStyle example

This example uses the strokeStyle property to change the colors of the shapes' outlines. We use the arc() method to draw circles instead of squares.

var ctx = document.getElementById('canvas').getContext('2d');

for (var i = 0; i < 6; i++) {
  for (var j = 0; j < 6; j++) {
    ctx.strokeStyle = 'rgb(0,' + Math.floor(255 - 42.5 * i) + ',' + 
                      Math.floor(255 - 42.5 * j) + ')';
    ctx.arc(12.5 + j * 25, 12.5 + i * 25, 10, 0, Math.PI * 2, true);

The result looks like this:

ScreenshotLive sample


Specification Status Comment
HTML Living Standard
The definition of 'CanvasRenderingContext2D.strokeStyle' in that specification.
Living Standard  

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support Yes12 Yes Yes Yes Yes
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support Yes Yes Yes Yes Yes Yes Yes

  • In WebKit- and Blink-based browsers, a non-standard and deprecated method ctx.setStrokeColor() is implemented besides this property.
    setStrokeColor(color, optional alpha);
    setStrokeColor(grayLevel, optional alpha);
    setStrokeColor(r, g, b, a);
    setStrokeColor(c, m, y, k, a);

See also

Document Tags and Contributors

Contributors to this page: fscholz, Sheppy, nmve, erikadoyle, Krenair
Last updated by: fscholz,