This information mostly applies to email clients that do not support Dark Mode editing. Email clients that support Dark Mode editing give you more control over how your email appears in Dark Mode. Learn more in the Dark Mode Editing article.
Why Color Contrast Matters
Color contrast affects how easily subscribers can read your email content. Good contrast improves accessibility for all users. This is especially important in Dark Mode.
If your email has poor contrast, email clients may automatically adjust your colors in Dark Mode. This can change the appearance of your design.
Strong contrast in Light Mode usually improves Dark Mode results as well.
Optimize Color Contrast in Knak
Knak checks your email for accessibility issues during the build process.
If your email does not meet recommended contrast standards, you will see a warning in the Optimize tab.
Use the Highlight Button
Click Highlight to locate the affected section in the builder.
Use the Edit Button
Click Edit to open the settings for the affected content.
Update the text color or background color to improve readability.
Use a Color Contrast Checker
Use a color contrast checker to test your color combinations before sending your email.
Recommended tool: Experte Color Contrast Checker.
A contrast checker helps you:
Compare text and background colors
Identify accessibility issues
Select accessible color combinations
Dark Mode Contrast Warnings
If you are using Dark Mode Editing, Knak also checks your Dark Mode color settings.
You will see additional warnings in the Optimize tab if your Dark Mode contrast does not meet accessibility recommendations.
Best Practices for Accessible Email Design
Follow these recommendations when building emails:
Use dark text on light backgrounds
Use light text on dark backgrounds
Avoid low-contrast color combinations
Test your email in both Light Mode and Dark Mode
Review warnings in the Optimize tab before sending
Need more help? Contact support via live chat using the chat bubble in the bottom right corner or email support@knak.com.