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
- Drag the Delta E node into your graph.
- Connect two colors to "Color A" and "Color B" inputs.
- Choose an algorithm (default is "2000", which is the industry-standard CIEDE2000).
- Set the desired precision for the result (default is 4 decimal places).
- 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.