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Why Contrast Checking Matters
- Approximately 253 million people worldwide have some form of vision impairment
- WCAG AA compliance is a legal requirement in many jurisdictions under accessibility laws
- Low contrast text is one of the most common and easily fixable accessibility failures
- Sufficient contrast also improves readability for all users, not just those with disabilities
- Catching contrast failures during design is far cheaper than fixing them after launch
The Color Contrast Checker on TechConverter.me gives you instant WCAG compliance results for any two colors. Enter your foreground and background colors in hex, RGB, or HSL format and get the exact contrast ratio along with pass/fail results for every WCAG level. Use it during design reviews, accessibility audits, and design system development to ensure your color choices are both beautiful and accessible.
Examples
Example 1: Checking Body Text on a White Background
A designer is using a soft gray for body text on a white background. The colors look clean and minimal, but they need to verify WCAG compliance before shipping.
- Foreground (text):
#767676 - Background:
#FFFFFF - Contrast ratio: 4.54:1
- WCAG AA (normal text): Pass
- WCAG AAA (normal text): Fail (requires 7:1)
The combination just barely passes AA. If the designer wants AAA compliance, they need to darken the text. Changing to #595959 raises the ratio to 7.0:1, achieving AAA compliance while still looking like a soft gray.
Example 2: White Text on a Brand Blue Button
A developer is building a primary call-to-action button using the company's brand blue. They need to confirm that white text on this background is readable.
Foreground: #FFFFFF
Background: #1A73E8
Contrast ratio: 4.63:1
WCAG AA (normal text): Pass
WCAG AA (large text): Pass
WCAG AAA (normal text): Fail
The button passes AA for normal text, which is the standard requirement for most web applications. The designer proceeds with confidence, knowing the button is accessible to users with low vision.
Example 3: Light Gray Placeholder Text Failing WCAG
A common accessibility mistake is using very light gray for placeholder text inside form inputs. Consider this combination:
- Foreground:
#AAAAAA - Background:
#FFFFFF - Contrast ratio: 2.32:1
- WCAG AA: Fail
- WCAG AAA: Fail
This fails all WCAG levels. The checker suggests darkening the placeholder to at least #767676 to achieve the minimum 4.5:1 ratio for AA compliance. This is one of the most common contrast failures found in accessibility audits.