Color and Contrast in Word Documents

Color is a powerful design tool, but relying on color alone to convey information excludes colorblind users. Additionally, low contrast between text and backgrounds makes content difficult to read for everyone.

What This Means

Information conveyed through color must also be available through other means (text, symbols, patterns). Text must have sufficient contrast with its background to be readable.

Why It Matters

• 8% of men and 0.5% of women have some form of color blindness
• Low contrast text is difficult for everyone, especially in bright environments
• Color-only information is invisible to colorblind users
• Good contrast improves readability for all users

Common Violations

DOCX-06-001: Information Conveyed by Color Alone {#DOCX-06-001}

What's Wrong: The document uses color as the only way to convey information. For example, using red text to indicate errors or green highlighting for approved items without any other indicator.

Impact: Serious - Colorblind users cannot perceive the information.

Common Examples:

• Red text for "required fields" without labels
• Green/red highlighting for status without text
• Color-coded charts without patterns or labels
• "Changes in red" without other indicators

How to Identify:

• Print the document in grayscale - is all information still clear?
• Ask: "If someone can't see colors, would they understand this?"
• Look for instructions that reference colors

How to Fix:

Use Multiple Indicators:

• Color + text label: "Required (in red)"
• Color + symbol: Red asterisk * for required fields
• Color + pattern: Red with diagonal stripes for errors

Example Fixes:

Before: "Required fields are shown in red." After: "Required fields are marked with an asterisk (*) and shown in red."

Before: Green cells = approved, Red cells = rejected After: Approved (green checkmark), Rejected (red X)

For Charts and Graphs:

• Use patterns in addition to colors
• Label data series directly
• Use different line styles (solid, dashed, dotted)

DOCX-06-002: Text Has Insufficient Contrast {#DOCX-06-002}

What's Wrong: Text color doesn't have enough contrast with the background color, making it difficult to read.

Impact: Serious - Low contrast text is hard to read, especially for users with low vision.

WCAG Contrast Requirements:

• Normal text: At least 4.5:1 contrast ratio
• Large text (18pt+ or 14pt+ bold): At least 3:1 contrast ratio

Common Problems:

• Light gray text on white background
• Yellow text on white background
• Light text on light backgrounds
• Dark text on dark backgrounds

How to Check Contrast:

Free Online Tools:

• WebAIM Contrast Checker
• Colour Contrast Analyser

To Find Color Values in Word:

1. Select the text
2. Go to Home > Font Color dropdown
3. Click More Colors > Custom tab
4. Note the RGB values

How to Fix:

1. Select the low-contrast text
2. Change the font color to a darker shade
3. Or change the background to create more contrast

Safe Color Combinations:

• Black text on white background (21:1)
• Dark blue text on white background
• White text on dark blue background
• Dark gray text (#333333) on white

Colors to Avoid:

• Light gray text (#999999 or lighter) on white
• Yellow, light green, or light blue text on white
• Red or green text (also problematic for colorblind users)

Checking Color in Charts and Graphics

Charts often have color accessibility issues:

1. Use high-contrast colors for different data series
2. Add patterns to differentiate areas
3. Include data labels directly on the chart
4. Provide a text summary of key data points

Document Themes and Accessibility

Word themes control colors throughout the document:

1. Go to Design > Colors
2. Choose a theme with good contrast
3. Or create a custom theme with accessible colors

Testing Your Theme:

• Check text against background colors
• Verify link colors are distinguishable
• Test heading colors for contrast

Best Practices

Do:

• Use color plus another indicator (text, symbol, pattern)
• Choose high-contrast color combinations
• Test with grayscale view
• Use Word's built-in styles which generally have good contrast

Don't:

• Use color as the only way to convey information
• Use light text on light backgrounds
• Assume everyone can distinguish red from green
• Use decorative fonts in light colors

Testing Your Document

1. Grayscale test: Print or view in grayscale
2. Contrast checker: Verify text contrast ratios
3. Squint test: If you squint and can't read it, contrast is too low
4. Ask someone: Have a colleague review color usage

Additional Resources

• Microsoft: Make your Word documents accessible
• W3C WCAG 1.4.1 Use of Color
• W3C WCAG 1.4.3 Contrast (Minimum)
• WebAIM: Contrast and Color Accessibility