---
canonical: https://amplience.com/developers/docs/workforce/flows/examples/extract-swatch/
title: Extract swatch
description: Learn how to build a Workforce Flow that generates a swatch from the most representative part of an image and then adds human review.
audience: Business User
image: https://cdn.media.amplience.net/i/ampproduct/ve-flows-extract-swatch2-lm?w=1200&h=630
image_width: 1200
image_height: 630
date_published: 2026-02-26
date_modified: 2026-06-25
---

# Extract swatch

Learn how to build a [Workforce Flow](https://amplience.com/developers/docs/workforce/flows/about-flows/) that:

- Extracts a swatch from the most representative part of an image
- Adds a human review step so you can see the swatch alongside the original image

A swatch is a convenient way of getting detail of a representative area of a product, for example a fabric, curtains, or a dress and with Flows you can automate this action and perform it at scale.

![Extract swatch flow overview](https://cdn.media.amplience.net/i/ampproduct/ve-flows-extract-swatch2-lm?w=1880&fmt=png&)

> **Info:** To build Flows you will need the Admin role on the hub. See [Workforce permissions](https://amplience.com/developers/docs/concepts/permissions/roles/#roles-and-workforce).

## Step 1- Create the form trigger

- Create a new content flow and give it a label and description.

- From the **Action Library** open the **Manual triggers** and drag a **Form trigger** to your flow. Once added, configure the flow.

![Add the form trigger action used to start the flow](https://cdn.media.amplience.net/i/ampproduct/form-extract-swatch-v2-1?w=1880&fmt=png 'Add the form trigger action used to start the flow')

- Click the **Configure Input Form** button and add the following fields:

  - An image. This will be the image to take the swatch from: **Image**.

  - A single line text field to represent the name of the product to focus on when extracting the swatch (for example leather bag, sunglasses, dress): **Product name**. If this is not included, the action is prompted to find the most obvious product within the image and to extract a swatch from that.

![Configure the form action with fields for the image and product name](https://cdn.media.amplience.net/i/ampproduct/form-extract-swatch-v2-2?w=1880&fmt=png 'Configure the form action with fields for the image and product name')

## Step 2- Extract a swatch from the image

Using the information entered in the **Form trigger**, the **Extract Swatch** action will extract the swatch from the image. If you specify a product name, it'll use AI to focus on the area of the image the contains that product.

- Open the **Image** section in the Actions Library and drag the **Extract Swatch** action to the flow. Connect it to the output of the Form Trigger.

- Choose your model.

- The **Image** to extract the swatch from should be set to the `Image` returned by the Form Trigger.

- The **Size** of the swatch can be whatever you want, but in this example we're using a width and height of `300` pixels.

- Set the **Product** to the `Product name` returned by the Form Trigger. This will help tell Extract Swatch what to focus on.

![Extract the swatch from the image](https://cdn.media.amplience.net/i/ampproduct/form-extract-swatch-v2-3?w=1880&fmt=png 'Extract the swatch from the image')

> **Tip:** For more details on how this action works, see [Extract Swatch](https://amplience.com/developers/docs/workforce/flows/action-reference/image-actions/#extract-swatch).

## Step 3- Review the swatch and original image

The final step is to review the generated swatch alongside the original image to ensure that it is suitable.

- Open the **Review and moderation** section in the **Action Library** and drag the **Human Review** action to your flow. Connect it to the [output](https://amplience.com/developers/docs/workforce/flows/action-reference/#inputs-outputs-and-ports) of **Extract Swatch**.

- Enter a **Review Task Label**, and set the **Data** to review by adding the `Swatch Image` returned by **Extract Swatch** and the original `Image` from the **Form Trigger**.

![Add and configure human review](https://cdn.media.amplience.net/i/ampproduct/form-extract-swatch-v2-4?w=1880&fmt=png 'Add and configure human review')

> **Info:** You can run the flow in Test mode straight away, but it needs to be enabled before you or anyone else can run it for general use. Learn more about [Enabling Flows](https://amplience.com/developers/docs/workforce/flows/review/#enabling-flows-to-be-run).

## Try it out

Save the flow. Once it's [enabled](https://amplience.com/developers/docs/workforce/flows/review/#enabling-flows-to-be-run) it's ready to run.

- Click **Run** at the top of the window.

- Upload an image and enter a product name to focus the swatch on. In this example we're focusing on the model's dress.

- Click the **Start Run** button.

![Running the flow](https://cdn.media.amplience.net/i/ampproduct/form-extract-swatch-v2-5?w=1880&fmt=png 'Running the flow')

The swatch is generated. You can view it by expanding the card.

![Extracting the flow](https://cdn.media.amplience.net/i/ampproduct/form-extract-swatch-v2-6?w=1880&fmt=png 'Extracting the swatch')

- Open the review.

The swatch is now shown in the review window alongside the original image so you can check it for suitability.

![Reviewing the swatch alongside the original image](https://cdn.media.amplience.net/i/ampproduct/form-extract-swatch-v2-7?w=1880&fmt=png 'Reviewing the swatch alongside the original image')