diff --git a/bellows/ezsp/__init__.py b/bellows/ezsp/__init__.py
index 7166847e..e7e0b88b 100644
--- a/bellows/ezsp/__init__.py
+++ b/bellows/ezsp/__init__.py
@@ -854,3 +854,15 @@ async def xncp_get_tx_power_info(self, country_code: str) -> GetTxPowerInfoRsp:
         """Get maximum and recommended TX power for a country (ISO 3166-1 alpha-2)."""
         code = country_code.upper().encode("ascii")
         return await self.send_xncp_frame(xncp.GetTxPowerInfoReq(country_code=code))
+
+    async def xncp_set_led_state(
+        self, red: t.uint8_t, green: t.uint8_t, blue: t.uint8_t
+    ) -> None:
+        """Set the adapter LED color."""
+        await self.send_xncp_frame(
+            xncp.SetLedStateReq(
+                red=red,
+                green=green,
+                blue=blue,
+            )
+        )
diff --git a/bellows/ezsp/xncp.py b/bellows/ezsp/xncp.py
index 2cfc50d4..44dcac95 100644
--- a/bellows/ezsp/xncp.py
+++ b/bellows/ezsp/xncp.py
@@ -43,6 +43,7 @@ class XncpCommandId(t.enum16):
     SET_ROUTE_TABLE_ENTRY_REQ = 0x0006
     GET_ROUTE_TABLE_ENTRY_REQ = 0x0007
     GET_TX_POWER_INFO_REQ = 0x0008
+    SET_LED_STATE_REQ = 0x0F00
 
     GET_SUPPORTED_FEATURES_RSP = GET_SUPPORTED_FEATURES_REQ | 0x8000
     SET_SOURCE_ROUTE_RSP = SET_SOURCE_ROUTE_REQ | 0x8000
@@ -53,6 +54,7 @@ class XncpCommandId(t.enum16):
     SET_ROUTE_TABLE_ENTRY_RSP = SET_ROUTE_TABLE_ENTRY_REQ | 0x8000
     GET_ROUTE_TABLE_ENTRY_RSP = GET_ROUTE_TABLE_ENTRY_REQ | 0x8000
     GET_TX_POWER_INFO_RSP = GET_TX_POWER_INFO_REQ | 0x8000
+    SET_LED_STATE_RSP = SET_LED_STATE_REQ | 0x8000
 
     UNKNOWN = 0xFFFF
 
@@ -123,6 +125,9 @@ class FirmwareFeatures(t.bitmap32):
     # Recommended and maximum TX power can be queried by country code
     TX_POWER_INFO = 1 << 7
 
+    # The firmware exposes adapter LED control
+    LED_CONTROL = 1 << 31
+
 
 class XncpCommandPayload(t.Struct):
     pass
@@ -233,6 +238,18 @@ class GetTxPowerInfoRsp(XncpCommandPayload):
     max_power_dbm: t.int8s
 
 
+@register_command(XncpCommandId.SET_LED_STATE_REQ)
+class SetLedStateReq(XncpCommandPayload):
+    red: t.uint8_t
+    green: t.uint8_t
+    blue: t.uint8_t
+
+
+@register_command(XncpCommandId.SET_LED_STATE_RSP)
+class SetLedStateRsp(XncpCommandPayload):
+    pass
+
+
 @register_command(XncpCommandId.UNKNOWN)
 class Unknown(XncpCommandPayload):
     pass
diff --git a/tests/test_xncp.py b/tests/test_xncp.py
index 74a099d3..720f514f 100644
--- a/tests/test_xncp.py
+++ b/tests/test_xncp.py
@@ -314,3 +314,23 @@ async def test_xncp_get_tx_power_info(ezsp_f: EZSP) -> None:
             ).serialize()
         )
     ]
+
+
+async def test_xncp_set_led_state(ezsp_f: EZSP) -> None:
+    """Test XNCP set_led_state."""
+    ezsp_f._mock_commands["customFrame"] = customFrame = AsyncMock(
+        return_value=[
+            t.EmberStatus.SUCCESS,
+            xncp.XncpCommand.from_payload(xncp.SetLedStateRsp()).serialize(),
+        ]
+    )
+
+    await ezsp_f.xncp_set_led_state(red=1, green=2, blue=3)
+
+    assert customFrame.mock_calls == [
+        call(
+            xncp.XncpCommand.from_payload(
+                xncp.SetLedStateReq(red=1, green=2, blue=3)
+            ).serialize()
+        )
+    ]