About カラーコントラストチェッカー
WCAGアクセシビリティ色コントラストをチェック
Use this free online カラーツール tool to work faster without installing extra software. The interface is built for quick input, clear output, and straightforward results on desktop and mobile devices.
WCAGアクセシビリティ色コントラストをチェック
Sample Text
The quick brown fox jumps over the lazy dog.
Small text example for checking readability.
Contrast Ratio
21.00:1
Excellent (AAA)
WCAG 2.1 Compliance
Normal Text (AA)
Minimum 4.5:1
Large Text (AA)
Minimum 3:1 (18pt+ or 14pt bold)
Normal Text (AAA)
Minimum 7:1
Large Text (AAA)
Minimum 4.5:1
Luminance Values
WCAGアクセシビリティ色コントラストをチェック
Use this free online カラーツール tool to work faster without installing extra software. The interface is built for quick input, clear output, and straightforward results on desktop and mobile devices.
This tool runs in your browser whenever possible, which keeps your inputs private and reduces unnecessary round-trips to the server.