CanvasRenderingContext2D: fillStyle property

Value

One of the following:

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

Examples

Changing the fill color of a shape

This example applies a blue fill color to a rectangle.

HTML

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

JavaScript

const canvas = document.getElementById("canvas"); const ctx = canvas.getContext("2d"); ctx.fillStyle = "blue"; ctx.fillRect(10, 10, 100, 100); 

Result

Creating multiple fill colors using loops

In this example, we use two for loops to draw a grid of rectangles, each having a different fill color. To achieve this, we use the two variables i and j to generate a unique RGB color for each square, and only modify the red and green values. (The blue channel has a fixed value.) By modifying the channels, you can generate all kinds of palettes.

<canvas id="canvas" width="150" height="150"></canvas> 

const canvas = document.getElementById("canvas"); const ctx = canvas.getContext("2d"); for (let i = 0; i < 6; i++) { for (let j = 0; j < 6; j++) { ctx.fillStyle = `rgb( ${Math.floor(255 - 42.5 * i)} ${Math.floor(255 - 42.5 * j)} 0)`; ctx.fillRect(j * 25, i * 25, 25, 25); } } 

The result looks like this:

Specifications

Browser compatibility

WebKit/Blink-specific note

In WebKit- and Blink-based browsers, the non-standard and deprecated method ctx.setFillColor() is implemented in addition to this property.

setFillColor(color, /* (optional) */ alpha); setFillColor(grayLevel, /* (optional) */ alpha); setFillColor(r, g, b, a); setFillColor(c, m, y, k, a); 

See also

• Canvas API
• The interface defining this property: CanvasRenderingContext2D
• Values used by this property:
  • <color> CSS data type
  • CanvasGradient object
  • CanvasPattern object