diff --git a/src/lv_draw/lv_draw_basic.c b/src/lv_draw/lv_draw_basic.c
index 10333feac..0829ba392 100644
--- a/src/lv_draw/lv_draw_basic.c
+++ b/src/lv_draw/lv_draw_basic.c
@@ -398,17 +398,22 @@ void lv_draw_letter(const lv_point_t * pos_p, const lv_area_t * mask_p, const lv
 
                 if(sub_px_cnt == 3) {
                     lv_color_t res_color;
-                    uint8_t bg_rgb[3] = {vdb_buf_tmp->ch.red, vdb_buf_tmp->ch.green, vdb_buf_tmp->ch.blue};
+
+                    if(font_rgb[0] == 0 && font_rgb[1] == 0 && font_rgb[2] == 0) {
+                        res_color = *vdb_buf_tmp;
+                    } else {
+                        uint8_t bg_rgb[3] = {vdb_buf_tmp->ch.red, vdb_buf_tmp->ch.green, vdb_buf_tmp->ch.blue};
 
 #if LV_SUBPX_BGR
-                    res_color.ch.blue = (uint16_t)((uint16_t)txt_rgb[0] * font_rgb[0] + (bg_rgb[0] * (255 - font_rgb[0]))) >> 8;
-                    res_color.ch.green = (uint16_t)((uint16_t)txt_rgb[1] * font_rgb[1] + (bg_rgb[1] * (255 - font_rgb[1]))) >> 8;
-                    res_color.ch.red = (uint16_t)((uint16_t)txt_rgb[2] * font_rgb[2] + (bg_rgb[2] * (255 - font_rgb[2]))) >> 8;
+                        res_color.ch.blue = (uint16_t)((uint16_t)txt_rgb[0] * font_rgb[0] + (bg_rgb[2] * (255 - font_rgb[0]))) >> 8;
+                        res_color.ch.green = (uint16_t)((uint16_t)txt_rgb[1] * font_rgb[1] + (bg_rgb[1] * (255 - font_rgb[1]))) >> 8;
+                        res_color.ch.red = (uint16_t)((uint16_t)txt_rgb[2] * font_rgb[2] + (bg_rgb[0] * (255 - font_rgb[2]))) >> 8;
 #else
-                    res_color.ch.red = (uint16_t)((uint16_t)txt_rgb[0] * font_rgb[0] + (bg_rgb[0] * (255 - font_rgb[0]))) >> 8;
-                    res_color.ch.green = (uint16_t)((uint16_t)txt_rgb[1] * font_rgb[1] + (bg_rgb[1] * (255 - font_rgb[1]))) >> 8;
-                    res_color.ch.blue = (uint16_t)((uint16_t)txt_rgb[2] * font_rgb[2] + (bg_rgb[2] * (255 - font_rgb[2]))) >> 8;
+                        res_color.ch.red = (uint16_t)((uint16_t)txt_rgb[0] * font_rgb[0] + (bg_rgb[0] * (255 - font_rgb[0]))) >> 8;
+                        res_color.ch.green = (uint16_t)((uint16_t)txt_rgb[1] * font_rgb[1] + (bg_rgb[1] * (255 - font_rgb[1]))) >> 8;
+                        res_color.ch.blue = (uint16_t)((uint16_t)txt_rgb[2] * font_rgb[2] + (bg_rgb[2] * (255 - font_rgb[2]))) >> 8;
 #endif
+                    }
                     if(scr_transp == false) {
                         vdb_buf_tmp->full = res_color.full;
 #if LV_COLOR_DEPTH == 32 && LV_COLOR_SCREEN_TRANSP