diff --git a/src/game/engine/scenes/hud/minimap.gd b/src/game/engine/scenes/hud/minimap.gd
index 29668341..0e963cde 100644
--- a/src/game/engine/scenes/hud/minimap.gd
+++ b/src/game/engine/scenes/hud/minimap.gd
@@ -9,30 +9,10 @@ const CityScript: GDScript = preload("res://engine/src/entities/city.gd")
 const UnitScript: GDScript = preload("res://engine/src/entities/unit.gd")
 const PlayerScript: GDScript = preload("res://engine/src/entities/player.gd")
 
-## Minimap terrain palette indexed by terrain_id. These are game-content
-## colors (no UI design token applies) and are a deliberately distinct,
-## muted minimap rendering — NOT a mirror of terrain.json's `color` arrays
-## (those diverge by 10-70/channel; only `coast` coincides). p2-74 leaves
-## this hardcoded; routing it through a data source is a Rail-2 follow-up
-## (logic change, out of scope for the visual-only token pass).
-const TERRAIN_COLORS: Dictionary = {
-	"ocean": Color(0.12, 0.24, 0.55),
-	"coast": Color(0.31, 0.71, 0.86),
-	"lake": Color(0.27, 0.55, 0.78),
-	"inland_sea": Color(0.22, 0.45, 0.76),
-	"grassland": Color(0.39, 0.71, 0.20),
-	"plains": Color(0.75, 0.78, 0.42),
-	"forest": Color(0.13, 0.45, 0.13),
-	"jungle": Color(0.06, 0.35, 0.10),
-	"boreal_forest": Color(0.22, 0.40, 0.28),
-	"hills": Color(0.63, 0.51, 0.27),
-	"mountains": Color(0.55, 0.55, 0.63),
-	"desert": Color(0.86, 0.75, 0.43),
-	"tundra": Color(0.78, 0.82, 0.86),
-	"swamp": Color(0.27, 0.35, 0.16),
-	"volcano": Color(0.55, 0.16, 0.12),
-}
-const DEFAULT_TERRAIN_COLOR: Color = Color(0.3, 0.3, 0.3)
+## Minimap terrain colour comes from the single source (biome_colors.json) via
+## DataLoader.get_biome_color() — keyed by biome_id, the same palette the main
+## map renderer (hex_renderer.gd) uses. No separate hardcoded minimap palette
+## (p2-87: one colour source, no divergent one-offs).
 const CITY_DOT_RADIUS: float = 4.0
 const UNIT_DOT_RADIUS: float = 3.0
 const OWNER_TINT_ALPHA: float = 0.38
@@ -125,16 +105,8 @@ func _on_terrain_transformed(_tile: Variant, _old_type: String, _new_type: Strin
 	call_deferred("_rebuild_terrain")
 
 
-func _get_terrain_color(terrain_id: String) -> Color:
-	if TERRAIN_COLORS.has(terrain_id):
-		return TERRAIN_COLORS[terrain_id]
-	var data: Dictionary = DataLoader.get_terrain(terrain_id)
-	if data.is_empty():
-		return DEFAULT_TERRAIN_COLOR
-	var rgb: Array = data.get("color", [])
-	if rgb.size() >= 3:
-		return Color(float(rgb[0]) / 255.0, float(rgb[1]) / 255.0, float(rgb[2]) / 255.0, 1.0)
-	return DEFAULT_TERRAIN_COLOR
+func _get_terrain_color(biome_id: String) -> Color:
+	return DataLoader.get_biome_color(biome_id)
 
 
 func _rebuild_terrain() -> void:
@@ -162,10 +134,10 @@ func _rebuild_terrain() -> void:
 		for px: int in img_w:
 			var world_pos: Vector2 = _mini_to_world(Vector2(float(px), float(py)))
 			var axial: Vector2i = HexUtilsScript.pixel_to_axial(world_pos)
-			var terrain_id: String = _get_tile_terrain(game_map, axial)
-			if terrain_id.is_empty():
+			var biome_id: String = _get_tile_terrain(game_map, axial)
+			if biome_id.is_empty():
 				continue
-			_cached_image.set_pixel(px, py, _get_terrain_color(terrain_id))
+			_cached_image.set_pixel(px, py, _get_terrain_color(biome_id))
 
 	_texture = ImageTexture.create_from_image(_cached_image)
 	_map_rect.texture = _texture
@@ -174,11 +146,11 @@ func _rebuild_terrain() -> void:
 
 
 func _get_tile_terrain(game_map: RefCounted, axial: Vector2i) -> String:
-	## Returns terrain_id for the tile at axial, or "" if not found.
+	## Returns the tile's biome_id at axial, or "" if not found.
 	var raw_tile: RefCounted = game_map.get_tile(axial) as RefCounted
 	if raw_tile == null:
 		return ""
-	return str(raw_tile.get("terrain_id"))
+	return str(raw_tile.get("biome_id"))
 
 
 func pulse_at(axial: Vector2i) -> void: