diff --git a/src/grafik.cpp b/src/grafik.cpp
index 2cbcbbf..5c8ca08 100644
--- a/src/grafik.cpp
+++ b/src/grafik.cpp
@@ -139,7 +139,7 @@ void lv_create_main_gui(void) {
     arcHum.arc = aHum;
     buildarc(arcHum);
 
-  lv_obj_set_style_bg_color(lv_screen_active(), lv_color_hex(0xADD8E6), LV_PART_MAIN);
+  lv_obj_set_style_bg_color(lv_screen_active(), lv_color_hex(BACKGROUND_COLOR), LV_PART_MAIN);
   
 
 }
@@ -192,7 +192,7 @@ void setValuetoArc(ARC arc, float value) {
         //lv_style_set_bg_color(&style_container_row, lv_palette_lighten(LV_PALETTE_LIGHT_BLUE, 4));
         lv_obj_add_style(container_row, &style_container_row, 0);
         lv_obj_set_style_border_side(container_row, LV_BORDER_SIDE_BOTTOM, LV_PART_MAIN);
-        lv_obj_set_style_bg_color(container_row, lv_color_hex(0xADD8E6), LV_PART_MAIN);
+        lv_obj_set_style_bg_color(container_row, lv_color_hex(BACKGROUND_COLOR), LV_PART_MAIN);
 
 
         // linke Axe
@@ -234,7 +234,7 @@ void setValuetoArc(ARC arc, float value) {
         lv_obj_set_style_size(chart, 0, 0, LV_PART_INDICATOR);  // No points on line
         lv_obj_set_scrollbar_mode(chart, LV_SCROLLBAR_MODE_OFF);
         lv_obj_set_style_border_width(chart, 0, LV_PART_MAIN);  // No border
-        lv_obj_set_style_bg_color(chart, lv_color_hex(0xADD8E6), LV_PART_MAIN);
+        lv_obj_set_style_bg_color(chart, lv_color_hex(BACKGROUND_COLOR), LV_PART_MAIN);
 
         // lv_obj_set_style_pad_right(chart, -10, LV_PART_MAIN);  // No border
         /*Add data series*/
@@ -263,7 +263,7 @@ void setValuetoArc(ARC arc, float value) {
         lv_obj_set_style_line_width(scale, 0, LV_PART_ITEMS);
         lv_obj_set_style_line_width(scale, 1, LV_PART_INDICATOR);
         lv_obj_set_style_line_width(scale, 0, LV_PART_MAIN);
-        lv_obj_set_style_bg_color(scale, lv_color_hex(0xADD8E6), LV_PART_MAIN);
+        lv_obj_set_style_bg_color(scale, lv_color_hex(BACKGROUND_COLOR), LV_PART_MAIN);
         lv_scale_set_range(scale, 40, 100);
 
         static lv_style_t style_scale;
diff --git a/src/grafik.h b/src/grafik.h
index c7adf17..b413084 100644
--- a/src/grafik.h
+++ b/src/grafik.h
@@ -35,7 +35,7 @@ typedef struct {
 #define SCREEN_WIDTH 320
 #define SCREEN_HEIGHT 240
 
-
+#define BACKGROUND_COLOR 0xD3F0FF
 #ifdef MAIN
 ARC arcTemp = {NULL, "temp", 40, -1, 110, 30.0, "%.1f°C", "°C", 10, 30, 20, 25, -11};
 ARC arcHum = {NULL, "humi", 170, -1, 110, 60.0, "%.0f%%", "%", 40, 100, 65, 70, 2};