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Hue color converter

Hue bulbs recieve colors in two parts: brightness is set explicitly, and colors are set using xy coordinates.
See Wikipedia for more details about sRGB color space.

This library can convert RGB colors to xyBri objects, which have x and y properties for color coordinates and a bri property for brightness.

var color = colorConverter.rgbToXyBri({r: 0.768, g: 0.819, b: 0.502 }});

A convenience function hexStringToXyBri can be used to convert an HTML color to xyBri objects.

Note however that not all colors can be represented by every type of lamp. To make sure a color can be shown by a particular lamp, use the xyBriForModel function.

var xyb = colorConverter.hexStringToXyBri('C4D180');
var color = colorConverter.xyBriForModel(xyb, 'LCT001');

myApi.sendToLamp({
  'on': true,
  'bri': color.bri,
  'xy': [ color.x, color.y ]
});

Models

These models of lamps are known in this library:

  • LCT001: Hue bulb 2012
  • LLC006: LivingColors Bol
  • LLC007: LivingColors Aura

TypeScript

This library is written in TypeScript, a typed superset of JavaScript. To install TypeScript and compile this library, run this:

npm install -g typescript
tsc colorspace.ts