diff --git a/src/modules/color/index.ts b/src/modules/color/index.ts
new file mode 100644
index 0000000..ecd8904
--- /dev/null
+++ b/src/modules/color/index.ts
@@ -0,0 +1,33 @@
+import autobind from 'autobind-decorator';
+import Module from '@/module';
+import Message from '@/message';
+
+export default class extends Module {
+	public readonly name = 'color';
+
+	@autobind
+	public install() {
+		return {
+			mentionHook: this.mentionHook
+		};
+	}
+
+	@autobind
+	private async mentionHook(msg: Message) {
+		if (msg.text && msg.text.includes('色決めて')) {
+            // rgbをそれぞれ乱数で生成する
+            const r = Math.floor(Math.random() * 256);
+            const g = Math.floor(Math.random() * 256);
+            const b = Math.floor(Math.random() * 256);
+            // rgbをhexに変換する
+            const hex = `${r.toString(16)}${g.toString(16)}${b.toString(16)}`;
+            const message = `RGB: ${r}, ${g}, ${b} (#${hex})とかどう？ [参考](https://www.colorhexa.com/${hex})`
+			msg.reply(message, {
+				immediate: true
+			});
+			return true;
+		} else {
+			return false;
+		}
+	}
+}