Delta E

What It Does

The Delta E node calculates the perceptual distance between two colors. It provides a numeric measurement of how different two colors appear to the human eye, using various industry-standard algorithms.

Inputs

Name	Description	Type	Required
Color A	First color for comparison	Color	No
Color B	Second color for comparison	Color	No
Precision	Number of decimal places in the result	Number	No
Algorithm	Color difference algorithm to use (76, CMC, 2000, Jz, ITP, OK)	String	No

Outputs

Name	Description	Type
Value	The calculated color difference (Delta E)	Number

How to Use It

1. Drag the Delta E node into your graph.

2. Connect two colors to "Color A" and "Color B" inputs.

3. Choose an algorithm (default is "2000", which is the industry-standard CIEDE2000).

4. Set the desired precision for the result (default is 4 decimal places).

5. The output value indicates how different the colors appear (higher values = more different).

Tips

• Values below 1.0 are generally imperceptible to the human eye.

• Values between 1.0 and 2.0 are perceptible only with close observation.

• The CIEDE2000 (2000) algorithm is the most accurate for design work.

See Also

• Distance: For calculating geometric distance between colors.

• Contrast: For calculating contrast ratio between colors.

• Sort Colors By Distance: For sorting colors based on their differences.

Use Cases

• Color Matching: Verify how close two colors appear to each other.

• Palette Refinement: Ensure colors in a palette are sufficiently distinct.

• Accessibility Validation: Check if color variations are perceptually different enough.