WCAG contrast for SVG
Make your SVG colors readable and accessible
This tool checks color contrast for foreground and background pairs against common WCAG targets (AA and AAA). It also previews how your chosen colors may appear under common color blindness modes, and generates higher-contrast alternatives you can apply to your SVG and download.
Check WCAG contrast (AA/AAA), preview common color blindness modes, generate higher-contrast options, apply them to your SVG, and download the updated file.
What this checks
Contrast is computed from relative luminance (sRGB). Higher is better. Typical targets are 4.5:1 for normal text (AA) and 7:1 for enhanced readability (AAA).
The preview applies a best-effort simulation matrix for common types of color vision deficiency. It helps you catch pairs that look distinct in full color but collapse into similar tones.
Best practices
Use shape, icons, labels, or patterns so meaning survives when colors are hard to distinguish.
If your SVG is used on a colored UI surface, test against that background, not pure white.
If you can reach 7:1, do it. It holds up better across screens, lighting, and compression.
Bright blues can look strong but still fail contrast depending on luminance.
Inspect workflow
SVG Accessibility and Contrast Checker: practical workflow notes
Check WCAG contrast, preview color blindness modes, and test higher-contrast options. Use this page when that specific output is the fastest path, then jump to the related tools below if you need a different export, cleanup, or craft-file workflow.
Best for
- contrast checker
- Cleaning, checking, editing, or exporting existing SVG markup
- Web, app, print, design-system, and handoff workflows
- Fast local SVG adjustments before export
Settings to try
- Use the visible controls for the exact SVG attribute or export behavior you need.
- Preview the output before copying or downloading.
- Run SVG cleaner or minifier when file size or editor markup gets in the way.
Useful limits
- SVG utility tools edit SVG markup and do not trace raster images.
- Complex filters, external references, or missing fonts can affect browser previews.
- Use image-to-SVG tools when your source is PNG, JPG, JPEG, or WebP.
Related tools
Need help choosing?
Read the concise workflow, preset, settings, and troubleshooting docs without adding clutter to the converter.
Frequently asked questions
What WCAG targets does this tool use?
It checks common contrast thresholds: 4.5:1 for normal text (AA), 7:1 for normal text (AAA), and 3:1 for large text (AA).
Is this only for text?
Contrast targets are defined for text, but they are a useful proxy for SVG UI labels, important icons, and meaning-carrying graphics. Decorative art does not always require strict compliance.
How does the color blindness preview work?
It applies a best-effort simulation matrix for common color vision deficiency types. Use it as a practical sanity check, not as a medical-grade simulator.
Will applying suggestions always update my SVG correctly?
It is best-effort. It updates matching colors in attributes and styles. If your SVG uses gradients, CSS variables, or external stylesheets, you may need manual edits.
