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Color | API Reference | ArcGIS API for JavaScript 3.46

require(["esri/Color"], function(Color) { /* code goes here */ });
Description

(Added at v3.9)

Inherits all attributes from

dojo/_base/Color

to provide functions for setting colors.

See also


Samples

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samples

that use this class.

Constructors Constants named Dictionary list of all CSS named colors, by name. Values are 3-item arrays with corresponding RG and B values. Properties Methods blendColors(start, end, weight, obj?) Color Blend colors start and end with weight from 0 to 1, 0.5 being a 50/50 blend. fromArray(a, obj?) Color Builds a Color from a 3 or 4 element array, mapping each element in sequence to the rgb(a) values of the color. fromHex(color, obj?) Color Converts a hex string with a '#' prefix to a color object. fromRgb(color, obj?) Color Returns a Color instance from a string of the form "rgb()" or "rgba()". fromString(str, obj?) Color Parses str for a color value. setColor(color) Color Takes a named string, hex string, array of rgb or rgba values, an object with r, g, b, and a properties, or another Color object and sets this color instance to that value. toCss(includeAlpha?) String Returns a css color string in rgb(a) representation. toHex() String Returns a CSS color string in hexadecimal representation. toRgb() Number[] Returns a 3 component array of rgb values. toRgba() Number[] Returns a 4 component array of rgba values.

Constructor Details

Creates a new Color object.

Parameters: <String | Number[] | Object> color Optional A named string, hex string, array of rgb or rgba values, an object with r, g, b, and a properties, or another Color object.

Property Details

The alpha value.

Known values: 0.0-1.0

The blue value.

Known values: 0-255

The green value.

Known values: 0-255

The red value.

Known values: 0-255

Method Details

Note: This is a static method.

Parameters: <Color> start Required The start color. <Color> end Required The end color. <Number> weight Required The weight value. <Color> obj Optional A previously allocated Color object to reuse for the result. Sample: 
  var startColor = new Color("#0000FF");
  var endColor = new Color("#CA0013");
  var blendedColor = Color.blendColors(startColor, endColor, 0.5);

Note: This is a static method.

Parameters: <Number[]> a Required The input array. <Color> obj Optional A previously allocated Color object to reuse for the result. Sample: 
  var redColor = Color.fromArray([201, 0, 19]);

Note: This is a static method.

Parameters: <String> color Required The input color. <Color> obj Optional A previously allocated Color object to reuse for the result. Sample: 
  var redColor = Color.fromHex("#CA0013");

Note: This is a static method.

Parameters: <String> color Required The input color. <Color> obj Optional A previously allocated Color object to reuse for the result. Sample: 
  var redColor = Color.fromRgb("rgb(202,0,19)");

Parses str for a color value. Accepts hex, rgb, and rgba style color values. Optionally accepts a Color object to update with the parsed value and return instead of creating a new object.

Note: This is a static method.

Acceptable input values for str may include arrays of any form accepted by dojo.colorFromArray, hex strings such as "#aaaaaa", or rgb or rgba strings such as "rgb(133, 200, 16)" or "rgba(10, 10, 10, 50)".

Parameters: <String> str Required The input value. <Color> obj Optional A previously allocated Color object to reuse for the result. Sample: 
  var redColor = Color.fromString("rgb(202,0,19)");

Takes a named string, hex string, array of rgb or rgba values, an object with r, g, b, and a properties, or another Color object and sets this color instance to that value.

Returns a css color string in rgb(a) representation.

Parameters: <Boolean> includeAlpha Optional If true, the alpha value will be included in the result.

Returns a CSS color string in hexadecimal representation.

Returns a 3 component array of rgb values.

Returns a 4 component array of rgba values.

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