diff --git a/bi/core.js b/bi/core.js
index 8cb222b3d..74a546c95 100644
--- a/bi/core.js
+++ b/bi/core.js
@@ -16822,7 +16822,7 @@ BI.extend(BI.DOM, {
     },
 
     isColor: function (color) {
-        return this.isRGBColor(color) || this.isHexColor(color);
+        return color && (this.isRGBColor(color) || this.isHexColor(color));
     },
 
     isRGBColor: function (color) {
@@ -16853,7 +16853,7 @@ BI.extend(BI.DOM, {
 
     //获取对比颜色
     getContrastColor: function (color) {
-        if (!color) {
+        if (!color || !this.isColor(color)) {
             return "";
         }
         if (this.isDarkColor(color)) {
diff --git a/docs/core.js b/docs/core.js
index 0c3403acc..43424df7d 100644
--- a/docs/core.js
+++ b/docs/core.js
@@ -22840,7 +22840,7 @@ BI.extend(BI.DOM, {
     },
 
     isColor: function (color) {
-        return this.isRGBColor(color) || this.isHexColor(color);
+        return color && (this.isRGBColor(color) || this.isHexColor(color));
     },
 
     isRGBColor: function (color) {
@@ -22871,7 +22871,7 @@ BI.extend(BI.DOM, {
 
     //获取对比颜色
     getContrastColor: function (color) {
-        if (!color) {
+        if (!color || !this.isColor(color)) {
             return "";
         }
         if (this.isDarkColor(color)) {
diff --git a/src/core/func/function.js b/src/core/func/function.js
index b26cb99df..5cb7acfab 100644
--- a/src/core/func/function.js
+++ b/src/core/func/function.js
@@ -104,7 +104,7 @@ BI.extend(BI.DOM, {
     },
 
     isColor: function (color) {
-        return this.isRGBColor(color) || this.isHexColor(color);
+        return color && (this.isRGBColor(color) || this.isHexColor(color));
     },
 
     isRGBColor: function (color) {
@@ -135,7 +135,7 @@ BI.extend(BI.DOM, {
 
     //获取对比颜色
     getContrastColor: function (color) {
-        if (!color) {
+        if (!color || !this.isColor(color)) {
             return "";
         }
         if (this.isDarkColor(color)) {