robi9877 / node-red-contrib-color-convert

Node-RED node to convert between Color representations (e.g. RGB to HSV)

NODE-RED-CONTRIB-COLOR-CONVERT

Install

Install via the pallet manager or by running the following in the Node-RED user directory (usually ~/.node-red):

npm install node-red-contrib-color-convert

Usage

This node converts between different color representations, it can convert between the following systems.

• RGB - Red, Green, Blue
• HSL - Hue, Saturation, Level
• HSV - Hue, Saturation, Value (brightnes)
• CSS - CSS color names

Inputs

For the first 3 input modes the node will attempt to determine the input format of msg.payload from the 3 following:

• a 3 segment array with values between 0-255 for RGB.
• a 3 segment array for HSL and HSV with Hue is between 0-360 and Saturation, Level, values 0-100.
• a object with keys red,green,blue with values between 0-255.
• a object with keys hue,saturation,lightness or value,brightness with values between 0-360 for hue and 0-100 for the others.

For the CSS input mode the msg.payload should be a string containing the name of a CSS color.

Outputs

Output type can be configured to be either a 3 element array, an object or a string. The 3 element array will contian the aproprate values in the same order as expected. Objects will have matching keys and the string will be the values from the array joined with a comma.

If the CSS output mode is selected then the output type will be forced to be a string.