diff --git a/.changeset/odd-bags-unite.md b/.changeset/odd-bags-unite.md
new file mode 100644
index 000000000..6721e9879
--- /dev/null
+++ b/.changeset/odd-bags-unite.md
@@ -0,0 +1,8 @@
+---
+'@channel.io/bezier-tokens': patch
+---
+
+Changes in alpha color tokens.
+- `color-fg(bg)-grey-grey-alpha-*` are renamed to `color-fg(bg)-grey-alpha-*`.
+- `color-fg(bg)-white-white-alpha-*` are renamed to `color-fg(bg)-white-alpha-*`.
+- add `color-fg-grey-darkest` token.
diff --git a/packages/bezier-tokens/src/alpha/functional/dark-theme/color.json b/packages/bezier-tokens/src/alpha/functional/dark-theme/color.json
index dea05cd46..aa77ec1cc 100644
--- a/packages/bezier-tokens/src/alpha/functional/dark-theme/color.json
+++ b/packages/bezier-tokens/src/alpha/functional/dark-theme/color.json
@@ -234,6 +234,10 @@
         }
       },
       "grey": {
+        "darkest": {
+          "value": "{color.white.100}",
+          "type": "color"
+        },
         "dark": {
           "value": "{color.grey.500}",
           "type": "color"
@@ -253,20 +257,20 @@
         "lightest": {
           "value": "{color.grey.850}",
           "type": "color"
+        }
+      },
+      "grey-alpha": {
+        "darker": {
+          "value": "{color.grey-alpha.800-90}",
+          "type": "color"
         },
-        "grey-alpha": {
-          "darker": {
-            "value": "{color.grey-alpha.800-90}",
-            "type": "color"
-          },
-          "dark": {
-            "value": "{color.grey-alpha.800-80}",
-            "type": "color"
-          },
-          "light": {
-            "value": "{color.grey-alpha.850-80}",
-            "type": "color"
-          }
+        "dark": {
+          "value": "{color.grey-alpha.800-80}",
+          "type": "color"
+        },
+        "light": {
+          "value": "{color.grey-alpha.850-80}",
+          "type": "color"
         }
       }
     },
@@ -326,29 +330,29 @@
           "value": "{color.white.0}",
           "type": "color"
         },
-        "grey-alpha": {
-          "darkest": {
-            "value": "{color.grey-alpha.700-80}",
-            "type": "color"
-          },
-          "darker": {
-            "value": "{color.grey-alpha.800-90}",
-            "type": "color"
-          },
-          "dark": {
-            "value": "{color.grey-alpha.800-80}",
-            "type": "color"
-          },
-          "light": {
-            "value": "{color.grey-alpha.850-80}",
-            "type": "color"
-          }
-        },
         "normal": {
           "value": "{color.grey.600}",
           "type": "color"
         }
       },
+      "grey-alpha": {
+        "darkest": {
+          "value": "{color.grey-alpha.700-80}",
+          "type": "color"
+        },
+        "darker": {
+          "value": "{color.grey-alpha.800-90}",
+          "type": "color"
+        },
+        "dark": {
+          "value": "{color.grey-alpha.800-80}",
+          "type": "color"
+        },
+        "light": {
+          "value": "{color.grey-alpha.850-80}",
+          "type": "color"
+        }
+      },
       "white": {
         "highest": {
           "value": "{color.grey.700}",
@@ -365,24 +369,24 @@
         "transparent": {
           "value": "{color.white.0}",
           "type": "color"
+        }
+      },
+      "white-alpha": {
+        "lightest": {
+          "value": "{color.grey-alpha.800-80}",
+          "type": "color"
         },
-        "white-alpha": {
-          "lightest": {
-            "value": "{color.grey-alpha.800-80}",
-            "type": "color"
-          },
-          "lighter": {
-            "value": "{color.black.60}",
-            "type": "color"
-          },
-          "light": {
-            "value": "{color.black.20}",
-            "type": "color"
-          },
-          "transparent": {
-            "value": "{color.black.0}",
-            "type": "color"
-          }
+        "lighter": {
+          "value": "{color.black.60}",
+          "type": "color"
+        },
+        "light": {
+          "value": "{color.black.20}",
+          "type": "color"
+        },
+        "transparent": {
+          "value": "{color.black.0}",
+          "type": "color"
         }
       },
       "blue": {
diff --git a/packages/bezier-tokens/src/alpha/functional/light-theme/color.json b/packages/bezier-tokens/src/alpha/functional/light-theme/color.json
index dc063dc45..1df4d8d39 100644
--- a/packages/bezier-tokens/src/alpha/functional/light-theme/color.json
+++ b/packages/bezier-tokens/src/alpha/functional/light-theme/color.json
@@ -234,6 +234,10 @@
         }
       },
       "grey": {
+        "darkest": {
+          "value": "{color.grey.900}",
+          "type": "color"
+        },
         "dark": {
           "value": "{color.grey.500}",
           "type": "color"
@@ -253,20 +257,20 @@
         "lightest": {
           "value": "{color.grey.50}",
           "type": "color"
+        }
+      },
+      "grey-alpha": {
+        "darker": {
+          "value": "{color.grey-alpha.200-80}",
+          "type": "color"
         },
-        "grey-alpha": {
-          "darker": {
-            "value": "{color.grey-alpha.200-80}",
-            "type": "color"
-          },
-          "dark": {
-            "value": "{color.grey-alpha.100-80}",
-            "type": "color"
-          },
-          "light": {
-            "value": "{color.grey-alpha.50-80}",
-            "type": "color"
-          }
+        "dark": {
+          "value": "{color.grey-alpha.100-80}",
+          "type": "color"
+        },
+        "light": {
+          "value": "{color.grey-alpha.50-80}",
+          "type": "color"
         }
       }
     },
@@ -326,29 +330,29 @@
           "value": "{color.grey.900-0}",
           "type": "color"
         },
-        "grey-alpha": {
-          "darkest": {
-            "value": "{color.grey-alpha.200-80}",
-            "type": "color"
-          },
-          "darker": {
-            "value": "{color.grey-alpha.100-90}",
-            "type": "color"
-          },
-          "dark": {
-            "value": "{color.grey-alpha.100-80}",
-            "type": "color"
-          },
-          "light": {
-            "value": "{color.grey-alpha.50-80}",
-            "type": "color"
-          }
-        },
         "normal": {
           "value": "{color.grey.400}",
           "type": "color"
         }
       },
+      "grey-alpha": {
+        "darkest": {
+          "value": "{color.grey-alpha.200-80}",
+          "type": "color"
+        },
+        "darker": {
+          "value": "{color.grey-alpha.100-90}",
+          "type": "color"
+        },
+        "dark": {
+          "value": "{color.grey-alpha.100-80}",
+          "type": "color"
+        },
+        "light": {
+          "value": "{color.grey-alpha.50-80}",
+          "type": "color"
+        }
+      },
       "white": {
         "highest": {
           "value": "{color.white.100}",
@@ -365,24 +369,24 @@
         "transparent": {
           "value": "{color.white.0}",
           "type": "color"
+        }
+      },
+      "white-alpha": {
+        "lightest": {
+          "value": "{color.white.90}",
+          "type": "color"
         },
-        "white-alpha": {
-          "lightest": {
-            "value": "{color.white.90}",
-            "type": "color"
-          },
-          "lighter": {
-            "value": "{color.white.60}",
-            "type": "color"
-          },
-          "light": {
-            "value": "{color.white.20}",
-            "type": "color"
-          },
-          "transparent": {
-            "value": "{color.white.0}",
-            "type": "color"
-          }
+        "lighter": {
+          "value": "{color.white.60}",
+          "type": "color"
+        },
+        "light": {
+          "value": "{color.white.20}",
+          "type": "color"
+        },
+        "transparent": {
+          "value": "{color.white.0}",
+          "type": "color"
         }
       },
       "blue": {