diff --git a/homeassistant/components/flux_led/util.py b/homeassistant/components/flux_led/util.py
index 7aa2d91de4e..8db12cb6e32 100644
--- a/homeassistant/components/flux_led/util.py
+++ b/homeassistant/components/flux_led/util.py
@@ -12,6 +12,8 @@ from .const import FLUX_COLOR_MODE_TO_HASS, MIN_RGB_BRIGHTNESS
 
 def _hass_color_modes(device: AIOWifiLedBulb) -> set[str]:
     color_modes = device.color_modes
+    if not color_modes:
+        return {ColorMode.ONOFF}
     return {_flux_color_mode_to_hass(mode, color_modes) for mode in color_modes}