Meaning and function of different wire colors in LabVIEW

Updated Mar 13, 2026

Reported In

Software

LabVIEW

Issue Details

Wires in LabVIEW have different colors, styles, and thicknesses. What do each of these indicate?

Solution

The following table has a list of the common wire types:

	Scalar	1D Array	2D Array	Color	Color RGB	Cluster	Cluster (Color)
Numeric				Blue	rgb(226,134, 13)		Brown
DBL Numeric				Orange	rgb(45, 45, 255)		Brown
Boolean				Green	rgb(42, 149, 42)		Brown
String				Pink	rgb(255, 11, 255)		Pink
Path				Dark Green	rgb(1, 128, 128)		Pink
Reference				Dark Green	rgb(1, 128, 128)		Pink
Hardware Resource				Purple	rgb(132, 9, 132)		Pink
Variant				Purple	rgb(132, 9, 132)		Pink
Waveform				Brown	rgb(160, 64, 0)		Pink
Class				Red	rgb(193, 0, 97)		Pink

Additional Information

Please note that the color of a class wire is customizable. The table shows its default appearance.

Related Links

Other Support Options

Ask the NI Community

Collaborate with other users in our discussion forums

Search the NI Community for a solution

Request Support from an Engineer

A valid service agreement or active software subscription may be required, and support options vary by country.

Open a service request

Learn about software subscriptions and services

Learn about hardware service programs