Free Color Contrast Checker
Check your color combinations against WCAG accessibility standards. See contrast ratios, grayscale previews, and colorblind simulations — free, no signup.
Quick Answer
Check your color combinations against WCAG accessibility standards. See contrast ratios, grayscale previews, and colorblind simulations — free, no signup.
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How to Use
- 1
Pick your foreground color
Use the color picker or type a hex code for your text or data color.
- 2
Pick your background color
Set the background color you plan to use behind the text or chart element.
- 3
Read the contrast ratio
The tool instantly calculates the WCAG contrast ratio and shows AA/AAA pass or fail status.
- 4
Check accessibility previews
Review how your combination looks in grayscale and for colorblind users (protanopia, deuteranopia, tritanopia).
- 5
Fix failing combinations
If contrast is too low, use the suggested color or adjust until you pass AA at minimum.
Why Choose GraphMake?
Frequently Asked Questions
What is a good contrast ratio?
WCAG AA requires at least 4.5:1 for normal text and 3:1 for large text (18px bold or 24px regular). AAA requires 7:1 for normal text. For infographics, aim for at least AA.
Why does contrast matter for infographics?
Low contrast makes text and data hard to read — especially on projectors, printed handouts, or mobile screens. Good contrast ensures your message gets across in any context. Read more at /blog/color-psychology-infographics.
What is WCAG?
WCAG (Web Content Accessibility Guidelines) is the international standard for digital accessibility. It defines minimum contrast ratios to ensure content is readable for people with visual impairments.
How do I fix low contrast?
Darken your text color or lighten your background (or vice versa). The tool suggests a passing color automatically. You can also try our /tools/color-palette-maker to find pre-tested palettes with good contrast built in.
Does this check colorblind accessibility?
Yes — the tool simulates protanopia (no red), deuteranopia (no green), and tritanopia (no blue) to show how your colors look to colorblind users.
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