Use the color-blind emulator

The color-blind emulator gives you an idea of what your webpage looks like to people with different types of color blindness. It also shows high-contrast scenarios that people with low vision or light sensitivity might use to engage with your content.

You can enable the color-blind emulator when setting up an advanced scan.

On this page:

• Enable the color-blind emulator
• View results from the color-blind emulator
• Types of color blindness emulated
• High-contrast scenarios emulated

Enable the color-blind emulator

To enable the color-blind emulator:

1. Go to Websites/apps.
2. Select the website you'd like to scan.
3. Choose Scans.
4. Select Run scan.
5. Choose the Advanced tab.
6. Fill out the required fields.
7. Under Audit options, select the checkbox for Color-blind emulator.
8. Select Run scan.

View results from the color-blind emulator

To view results from the color-blind emulator:

1. Run an advanced scan with the color-blind emulator enabled.
2. On the Scan results page, set the Report table to View by page.
3. Select Emulator to view results from a specific page. You’ll be taken to a page showing an unaltered screenshot of your website and results for each type of color blindness.

Types of color blindness emulated

The color-blind emulator replicates eight types of color blindness:

• Achromatomaly (partial color blindness, sees the absence of most colors)
• Achromatopsia (complete color blindness, can only see shades)
• Deuteranomaly (trouble distinguishing greens)
• Deuteranopia (green blind–can't see greens at all)
• Protanomaly (trouble distinguishing reds)
• Protanopia (red blind–can't see reds at all)
• Tritanomaly (trouble distinguishing blues)
• Tritanopia (blue blind–can't see blues at all)

High-contrast scenarios emulated

The color-blind emulator shows these high-contrast scenarios:

• High-contrast mode in grayscale
• High-contrast mode in inverted colors
• High-contrast mode in inverted grayscale
• High-contrast mode in yellow on black
• High-contrast default mode