diff --git a/src/utils/generate-utils.ts b/src/utils/generate-utils.ts
index 57e009e5..863eeb28 100644
--- a/src/utils/generate-utils.ts
+++ b/src/utils/generate-utils.ts
@@ -13,12 +13,28 @@ export function generateColorHEX(): string {
  * @returns rgb(24 144 255) / rgba(0,0,0,.85)
  */
 export function generateColorRGBA(hasAlpha: boolean = false) {
-  const red = Math.floor(Math.random() * 256);
-  const green = Math.floor(Math.random() * 256);
-  const blue = Math.floor(Math.random() * 256);
+  let red:number;
+  let green: number;
+  let blue:number;
+   red = Math.floor(Math.random() * 256)+100;//+100增加顏色亮度
+   green = Math.floor(Math.random() * 256)+100;
+   blue = Math.floor(Math.random() * 256)+100;
+
+  const brightChannel = Math.floor(Math.random() * 3);
+  switch (brightChannel) {
+    case 0:
+      red = Math.min(255, red + 50);
+      break;
+    case 1:
+      green = Math.min(255, green + 50);
+      break;
+    case 2:
+      blue = Math.min(255, blue + 50);
+      break;
+  }
 
   if (hasAlpha) {
-    const alpha = Math.floor(Math.random() * 100);
+    const alpha = Math.floor(Math.random() * 100)+50;
     return `rgb(${red}, ${green}, ${blue}, 0.${alpha})`;
   }