<p>コントラスト比のチェックを行うのに、Adobeの下記サイトが使いやすい<br style="display:none">
<span class="embed-block zenn-embedded zenn-embedded-card"><iframe id="zenn-embedded__ddfe78a9db434" src="https://embed.zenn.studio/card#zenn-embedded__ddfe78a9db434" data-content="https%3A%2F%2Fcolor.adobe.com%2Fja%2Fcreate%2Fcolor-contrast-analyzer" frameborder="0" scrolling="no" loading="lazy"></iframe></span><a href="https://color.adobe.com/ja/create/color-contrast-analyzer" style="display:none" target="_blank" rel="nofollow noopener noreferrer">https://color.adobe.com/ja/create/color-contrast-analyzer</a></p>
