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Update text and png
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mikehoffms committed Oct 17, 2023
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Expand Up @@ -5,7 +5,7 @@ author: MSEdgeTeam
ms.author: msedgedevrel
ms.topic: conceptual
ms.prod: microsoft-edge
ms.date: 06/07/2021
ms.date: 10/17/2023
---
# Verify that a page is usable by people with color blindness

Expand All @@ -23,13 +23,13 @@ But you can't expect all of your users to experience these colors as intended.

To check whether a webpage is usable by people with color blindness:

1. Open the [accessibility-testing demo webpage](https://microsoftedge.github.io/Demos/devtools-a11y-testing/) in a new window or tab.
1. Open the webpage in a new window or tab, such as the [accessibility-testing demo webpage](https://microsoftedge.github.io/Demos/devtools-a11y-testing/).

1. Right-click anywhere in the webpage and then select **Inspect**. Or, press **F12**. DevTools opens next to the webpage.
1. Right-click anywhere in the webpage and then select **Inspect**. Or, press **F12**. DevTools opens next to the webpage. By default, Quick View is open at the bottom of DevTools.

1. Press **Esc** to open the Drawer at the bottom of DevTools. Click the **+** icon at the top of the Drawer to see the list of tools, and then select **Rendering**.
1. If Quick View isn't open already, press **Esc** to open Quick View. In Quick View, click **More tools** (**+**), and then select the **Rendering** tool.

1. In the **Emulate vision deficiencies** dropdown list, select **Protanopia**. _Protanopia_ is reduced sensitivity to red light, making it hard to differentiate green, red, and yellow.
1. Scroll down to the **Emulate vision deficiencies** dropdown list, and then select **Protanopia (no red)**. _Protanopia_ is reduced sensitivity to red light, making it hard to differentiate green, red, and yellow:

![Showing the document as someone with protanopia would see it](./test-color-blindness-images/a11y-testing-simulating-protanopia.png)

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