How to change colours for Angular-Chart.js

Your should declare colours object as an array

"colours": [{
    fillColor: 'rgba(47, 132, 71, 0.8)',
    strokeColor: 'rgba(47, 132, 71, 0.8)',
    highlightFill: 'rgba(47, 132, 71, 0.8)',
    highlightStroke: 'rgba(47, 132, 71, 0.8)'
}];

Working Plunkr

For more info refer this post / this too.

For newer versions, see eli0tt's answer, as the parameter names have changed.

I was having the same difficulty. In the docs it says to use "colors" however once I updated my html to:

chart-colours

with an angular array of:

$scope.colours = ['#72C02C', '#3498DB', '#717984', '#F1C40F'];

It worked!

As @pankajparkar said. Just adding that you can also pass html colours and angular-chart.js will define the colour objects properly in rgba with the proper nuances e.g. $scope.colors = ['#FD1F5E','#1EF9A1','#7FFD1F','#68F000'];

It seems that naming changed again. I'm using angular-chart.js 1.0.3 and color management for bar charts works like this :

colors:[{
      backgroundColor:"#F00",
      hoverBackgroundColor:"#FF0",
      borderColor:"#0F0",
      hoverBorderColor:"#00F"
}];

In the canvas tag, the name of the attribute is chart-colors

As at 2017 I got angular-charts to work with the following code.

1. that the names of the elements are changed. Taken from the angular-chart source code.

2. also that as soon as you run out of colours angular-chart will generate them for you. This includes an opacity of 0.2 for background colours.

3. If you specify #hex colours opacity will be added.

Colour specification via global.

app.config(['ChartJsProvider', function (ChartJsProvider) {

// Using ChartJsProvider.setOptions('bar', { didn't seem to work for me.
// Nor did $scope.chartColors. Although I only tried that in the controller.
Chart.defaults.global.colors = [
  {
    backgroundColor: 'rgba(78, 180, 189, 1)',
    pointBackgroundColor: 'rgba(78, 180, 189, 1)',
    pointHoverBackgroundColor: 'rgba(151,187,205,1)',
    borderColor: 'rgba(0,0,0,0',
    pointBorderColor: '#fff',
    pointHoverBorderColor: 'rgba(151,187,205,1)'
  }, {
    backgroundColor: 'rgba(229, 229, 229, 1)',
    pointBackgroundColor: 'rgba(229, 229, 229, 1)',
    pointHoverBackgroundColor: 'rgba(151,187,205,1)',
    borderColor: 'rgba(0,0,0,0',
    pointBorderColor: '#fff',
    pointHoverBorderColor: 'rgba(151,187,205,1)'
  }
...

In the source code the colour picking code is currently. Colours set via Chart.js options are reset here (I didn't get this to work).

Pick colours as per angular-chart.js source code:

  var colors = angular.copy(scope.chartColors ||
    ChartJs.getOptions(type).chartColors ||
    Chart.defaults.global.colors

Yes, if you don't specify an object, opacity is set for you. From angular-chart.js:

function convertColor (color) {
  if (typeof color === 'object' && color !== null) return color;
  if (typeof color === 'string' && color[0] === '#') return getColor(hexToRgb(color.substr(1)));
  return getRandomColor();
}
...
function getColor (color) {
  return {
    backgroundColor: rgba(color, 0.2),
    pointBackgroundColor: rgba(color, 1),
    pointHoverBackgroundColor: rgba(color, 0.8),
    borderColor: rgba(color, 1),
    pointBorderColor: '#fff',
    pointHoverBorderColor: rgba(color, 1)
  };
}