Accessibility and Assistive Technology

Check Gradients

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What is Color Gradient?

A color gradient is a smooth transition between two or more colors, where the change happens gradually rather than abruptly. Instead of sharp boundaries, colors blend step by step across a surface or space. Color gradients are important because they help create visual depth, guide the viewer’s attention, and make designs feel more natural and appealing. By using gradual color changes, gradients improve clarity, aesthetics, and user experience while avoiding visual harshness.

How to Check Gradients?

To ensure that color contrast meets accessibility standards and provides sufficient readability, verify that contrast ratios exceed 4.5:1, especially for body text and key interface elements. Maintaining this level of contrast enhances usability and ensures compliance with recognized accessibility guidelines.

In situations where the color is a gradient or cannot be determined programmatically, compare the lightest part of the text with the lightest part of the background using the color picker. Then compare the darkest part of the text with the darkest part of the background.

  1. Choose a color picker tool and a color contrast checker tool.

    Note: Some color contrast checkers like WebAIM’s Color Contrast Checker and TPGi’s Color Contrast Analyzer have a color picker built into their checker tool. For this article, we will use WebAIM color contrast tool.

  1. Click inside the input field filled with the color (next to the Hex value field).

     
WebAIM Contrast Checker webpage showing foreground and background color controls. A red arrow points to the foreground color preview bar.
  1. When the color menu opens, look for the Color picker icon (a dropper tool).
  2. This is what you’ll use to select the colors from your gradient and text.
Close-up of a color picker interface in the WebAIM contrast checker tool. A red arrow highlights the color picker tool.
  1. In the web page or image, use the color picker to select the lightest part of the text color and the lightest part of the gradient’s background color.
Side-by-side panels showing green text on a red background labeled ‘Vibrates.’ Arrows point to circular color picker indicators used to select the foreground and background colors for checking contrast ratio.
  1. In the Color Contrast Checker, enter the text colors into the “foreground” and “background” inputs. Results will show up automatically below.
Screenshot of the WebAIM contrast checker tool showing foreground color (green) and background color (red). Lightness sliders are visible for both colors, indicating low contrast between the selected foreground and background.
  1. Based on the results of these two checks, you can adjust either your gradient colour or your text colour and recheck to achieve a passing overall contrast score.
Screenshot of the WebAIM contrast checker showing a contrast ratio of 1.18:1. Both normal text and large text fail WCAG AA and AAA guidelines. Green text is displayed on a dark red background as an example of insufficient contrast.
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