diff --git a/packages/schema/src/schema/project/layers/heatmapLayer.json b/packages/schema/src/schema/project/layers/heatmapLayer.json
index 9b654d788..7942c2c52 100644
--- a/packages/schema/src/schema/project/layers/heatmapLayer.json
+++ b/packages/schema/src/schema/project/layers/heatmapLayer.json
@@ -11,7 +11,7 @@
     },
     "opacity": {
       "type": "number",
-      "description": "The opacity of the source",
+      "description": "The opacity of the layer",
       "default": 1,
       "multipleOf": 0.1,
       "minimum": 0,
diff --git a/packages/schema/src/schema/project/layers/imageLayer.json b/packages/schema/src/schema/project/layers/imageLayer.json
index 39ac323f5..51e71219e 100644
--- a/packages/schema/src/schema/project/layers/imageLayer.json
+++ b/packages/schema/src/schema/project/layers/imageLayer.json
@@ -11,7 +11,7 @@
     },
     "opacity": {
       "type": "number",
-      "description": "The opacity of the source",
+      "description": "The opacity of the layer",
       "default": 1,
       "multipleOf": 0.1,
       "minimum": 0,
diff --git a/packages/schema/src/schema/project/layers/rasterLayer.json b/packages/schema/src/schema/project/layers/rasterLayer.json
index c42509cba..bee350a8f 100644
--- a/packages/schema/src/schema/project/layers/rasterLayer.json
+++ b/packages/schema/src/schema/project/layers/rasterLayer.json
@@ -11,7 +11,7 @@
     },
     "opacity": {
       "type": "number",
-      "description": "The opacity of the source",
+      "description": "The opacity of the layer",
       "default": 1,
       "multipleOf": 0.1,
       "minimum": 0,
diff --git a/packages/schema/src/schema/project/layers/symbology/geoTiffMultiBand.json b/packages/schema/src/schema/project/layers/symbology/geoTiffMultiBand.json
new file mode 100644
index 000000000..ba18257d8
--- /dev/null
+++ b/packages/schema/src/schema/project/layers/symbology/geoTiffMultiBand.json
@@ -0,0 +1,27 @@
+{
+    "type": "object",
+    "description": "The state of the GeoTiff layer's multiband coloring symbology options",
+    "required": [],
+    "additionalProperties": false,
+    "properties": {
+        "type": {
+            "const": "Multiband"
+        },
+        "red": {
+            "type": "string",
+            "description": "The name of the band used for the red channel."
+        },
+        "green": {
+            "type": "string",
+            "description": "The name of the band used for the green channel."
+        },
+        "blue": {
+            "type": "string",
+            "description": "The name of the band used for the blue channel."
+        },
+        "alpha": {
+            "type": "string",
+            "description": "The name of the band used for the alpha channel."
+        }
+    }
+}
diff --git a/packages/schema/src/schema/project/layers/symbology/geoTiffSingleBand.json b/packages/schema/src/schema/project/layers/symbology/geoTiffSingleBand.json
new file mode 100644
index 000000000..7d704616a
--- /dev/null
+++ b/packages/schema/src/schema/project/layers/symbology/geoTiffSingleBand.json
@@ -0,0 +1,15 @@
+{
+    "type": "object",
+    "description": "The state of the GeoTiff layer's single band coloring symbology options",
+    "required": [],
+    "additionalProperties": false,
+    "properties": {
+        "type": {
+            "const": "Singleband"
+        },
+        "band": {
+            "type": "string",
+            "description": "The name of the band used for coloring."
+        }
+    }
+}
diff --git a/packages/schema/src/schema/project/layers/symbology/vectorCanonicalColor.json b/packages/schema/src/schema/project/layers/symbology/vectorCanonicalColor.json
new file mode 100644
index 000000000..0b44c8f4c
--- /dev/null
+++ b/packages/schema/src/schema/project/layers/symbology/vectorCanonicalColor.json
@@ -0,0 +1,16 @@
+{
+    "title": "IVectorCanonicalColor",
+    "description": "The state of the layer's canonical color symbology options",
+    "type": "object",
+    "required": ["selectedAttribute"],
+    "additionalProperties": false,
+    "properties": {
+        "type": {
+            "const": "Canonical"
+        },
+        "selectedAttribute": {
+            "type": "string",
+            "description": "The selected attribute for canonical color mapping"
+        }
+    }
+}
diff --git a/packages/schema/src/schema/project/layers/symbology/vectorCategorizedColor.json b/packages/schema/src/schema/project/layers/symbology/vectorCategorizedColor.json
new file mode 100644
index 000000000..c03fbbc26
--- /dev/null
+++ b/packages/schema/src/schema/project/layers/symbology/vectorCategorizedColor.json
@@ -0,0 +1,36 @@
+{
+    "title": "IVectorCategorizedColor",
+    "description": "The state of the layer's categorized color symbology options",
+    "type": "object",
+    "required": ["selectedAttribute"],
+    "additionalProperties": false,
+    "properties": {
+        "type": {
+            "const": "Categorized"
+        },
+        "selectedAttribute": {
+            "type": "string",
+            "description": "The selected attribute for categorizing the color"
+        },
+        "colorRamp": {
+            "type": "string",
+            "default": "cool"
+        },
+        "stopsValues": {
+            "type": "object",
+            "description": "The mapping of category values to color values",
+            "patternProperties": {
+                ".*": {
+                    "type": "string",
+                    "pattern": "^#[0-9a-fA-F]{6}$",
+                    "description": "The hex color value for the category, where the key is the category value"
+                }
+            }
+        },
+        "strokeColor": {
+            "type": "string",
+            "description": "The color of the stroke for the symbol",
+            "default": "#ffffff"
+        }
+    }
+}
diff --git a/packages/schema/src/schema/project/layers/symbology/vectorCategorizedSize.json b/packages/schema/src/schema/project/layers/symbology/vectorCategorizedSize.json
new file mode 100644
index 000000000..83210d300
--- /dev/null
+++ b/packages/schema/src/schema/project/layers/symbology/vectorCategorizedSize.json
@@ -0,0 +1,36 @@
+{
+    "title": "IVectorCategorizedSize",
+    "description": "The state of the layer's categorized size symbology options",
+    "type": "object",
+    "required": ["selectedAttribute"],
+    "additionalProperties": false,
+    "properties": {
+        "type": {
+            "const": "Categorized"
+        },
+        "selectedAttribute": {
+            "type": "string",
+            "description": "The selected attribute for categorizing the size"
+        },
+        "stopsValues": {
+            "type": "object",
+            "description": "The mapping of category values to size values",
+            "patternProperties": {
+                ".*": {
+                    "type": "number",
+                    "description": "The size value in pixels for the category, where the key is the category value"
+                }
+            }
+        },
+        "strokeThickness": {
+            "type": "number",
+            "description": "The thickness of the stroke in pixels",
+            "default": 1.25
+        },
+        "symbolRadius": {
+            "type": "number",
+            "description": "The radius of the symbols in pixels",
+            "default": 1
+        }
+    }
+}
diff --git a/packages/schema/src/schema/project/layers/symbology/vectorGraduatedColor.json b/packages/schema/src/schema/project/layers/symbology/vectorGraduatedColor.json
new file mode 100644
index 000000000..e23747fa6
--- /dev/null
+++ b/packages/schema/src/schema/project/layers/symbology/vectorGraduatedColor.json
@@ -0,0 +1,53 @@
+{
+    "title": "IVectorGraduatedColor",
+    "description": "The state of the layer's graduated color symbology options",
+    "type": "object",
+    "required": ["selectedAttribute", "colorRamp"],
+    "additionalProperties": false,
+    "properties": {
+        "type": {
+            "const": "Graduated"
+        },
+        "selectedAttribute": {
+            "type": "string",
+            "description": "The selected attribute for varying the color"
+        },
+        "colorRamp": {
+            "type": "string",
+            "default": "cool"
+        },
+        "nStops": {
+            "type": "number",
+            "description": "The number of segments to use when mapping colors to data values",
+            "default": 9
+        },
+        "stopsDistributionMode": {
+            "type": "string",
+            "description": "The method of distributing segments when mapping colors to data values",
+            "default": "equal interval",
+            "enum": [
+                "quantile",
+                "equal interval",
+                "jenks",
+                "pretty",
+                "logarithmic"
+            ]
+        },
+        "stopsValues": {
+            "type": "object",
+            "description": "The mapping of input data values to color values",
+            "patternProperties": {
+                "^[0-9]+$": {
+                    "type": "string",
+                    "pattern": "^#[0-9a-fA-F]{6}$",
+                    "description": "The hex color value at the stop index, where the key is the index of the stop"
+                }
+            }
+        },
+        "strokeColor": {
+            "type": "string",
+            "description": "The color of the stroke for the symbol",
+            "default": "#ffffff"
+        }
+    }
+}
diff --git a/packages/schema/src/schema/project/layers/symbology/vectorGraduatedSize.json b/packages/schema/src/schema/project/layers/symbology/vectorGraduatedSize.json
new file mode 100644
index 000000000..ac437a774
--- /dev/null
+++ b/packages/schema/src/schema/project/layers/symbology/vectorGraduatedSize.json
@@ -0,0 +1,48 @@
+{
+    "title": "IVectorGraduatedSize",
+    "description": "The state of the layer's graduated size symbology options",
+    "type": "object",
+    "required": ["selectedAttribute"],
+    "additionalProperties": false,
+    "properties": {
+        "type": {
+            "const": "Graduated"
+        },
+        "selectedAttribute": {
+            "type": "string",
+            "description": "The selected attribute for varying the size"
+        },
+        "nStops": {
+            "type": "number",
+            "description": "The number of segments to use when mapping size to data values",
+            "default": 9
+        },
+        "stopsDistributionMode": {
+            "type": "string",
+            "description": "The method of distributing segments when mapping size to data values",
+            "default": "equal interval",
+            "enum": [
+                "quantile",
+                "equal interval",
+                "jenks",
+                "pretty",
+                "logarithmic"
+            ]
+        },
+        "stopsValues": {
+            "type": "object",
+            "description": "The mapping of input data values to size values",
+            "patternProperties": {
+                "^[0-9]+$": {
+                    "type": "number",
+                    "description": "The size value in pixels at the stop index, where the key is the index of the stop"
+                }
+            }
+        },
+        "strokeThickness": {
+            "type": "number",
+            "description": "The thickness of the stroke in pixels",
+            "default": 1.25
+        }
+    }
+}
diff --git a/packages/schema/src/schema/project/layers/symbology/vectorHeatmapColor.json b/packages/schema/src/schema/project/layers/symbology/vectorHeatmapColor.json
new file mode 100644
index 000000000..ba9f2f6e1
--- /dev/null
+++ b/packages/schema/src/schema/project/layers/symbology/vectorHeatmapColor.json
@@ -0,0 +1,26 @@
+{
+    "title": "IVectorHeatmapColor",
+    "description": "The state of the layer's heatmap color symbology options",
+    "type": "object",
+    "required": ["selectedAttribute", "colorRamp"],
+    "additionalProperties": false,
+    "properties": {
+        "type": {
+            "const": "Heatmap"
+        },
+        "colorRamp": {
+            "type": "string",
+            "default": "cool"
+        },
+        "radius": {
+            "type": "number",
+            "description": "The radius of influence for each point in the heatmap",
+            "default": 20
+        },
+        "blur": {
+            "type": "number",
+            "description": "The blur radius for the heatmap effect",
+            "default": 15
+        }
+    }
+}
diff --git a/packages/schema/src/schema/project/layers/symbology/vectorSimpleColor.json b/packages/schema/src/schema/project/layers/symbology/vectorSimpleColor.json
new file mode 100644
index 000000000..98203b836
--- /dev/null
+++ b/packages/schema/src/schema/project/layers/symbology/vectorSimpleColor.json
@@ -0,0 +1,23 @@
+{
+    "title": "IVectorSimpleColor",
+    "description": "The state of the layer's simple (single symbol) color symbology options",
+    "type": "object",
+    "additionalProperties": false,
+    "properties": {
+        "type": {
+            "const": "Simple symbol"
+        },
+        "fillColor": {
+            "type": "string",
+            "pattern": "^#[0-9a-fA-F]{6}$",
+            "description": "The fill color for the symbol",
+            "default": "#3388ff"
+        },
+        "strokeColor": {
+            "type": "string",
+            "pattern": "^#[0-9a-fA-F]{6}$",
+            "description": "The color of the stroke for the symbol",
+            "default": "#ffffff"
+        }
+    }
+}
diff --git a/packages/schema/src/schema/project/layers/symbology/vectorSimpleSize.json b/packages/schema/src/schema/project/layers/symbology/vectorSimpleSize.json
new file mode 100644
index 000000000..dea69ae00
--- /dev/null
+++ b/packages/schema/src/schema/project/layers/symbology/vectorSimpleSize.json
@@ -0,0 +1,21 @@
+{
+    "title": "IVectorSimpleSize",
+    "description": "The state of the layer's simple (single symbol) size symbology options",
+    "type": "object",
+    "additionalProperties": false,
+    "properties": {
+        "type": {
+            "const": "Simple symbol"
+        },
+        "strokeThickness": {
+            "type": "number",
+            "description": "The thickness of the stroke in pixels",
+            "default": 1.25
+        },
+        "symbolRadius": {
+            "type": "number",
+            "description": "The radius of the symbols in pixels",
+            "default": 5
+        }
+    }
+}
diff --git a/packages/schema/src/schema/project/layers/vectorLayer.json b/packages/schema/src/schema/project/layers/vectorLayer.json
index ad25aae59..01f9fb4a1 100644
--- a/packages/schema/src/schema/project/layers/vectorLayer.json
+++ b/packages/schema/src/schema/project/layers/vectorLayer.json
@@ -9,55 +9,26 @@
       "type": "string",
       "description": "The id of the source"
     },
-    "color": {
-      "type": "object",
-      "description": "The color of the the object"
-    },
     "opacity": {
       "type": "number",
-      "description": "The opacity of the the object",
+      "description": "The opacity of the layer",
       "default": 1,
       "multipleOf": 0.1,
       "minimum": 0,
       "maximum": 1
     },
-    "symbologyState": {
+    "symbology": {
       "type": "object",
-      "description": "The state of the symbology panel options",
-      "required": ["renderType"],
+      "description": "The user inputs for symbology options",
+      "additionalProperties": false,
       "properties": {
-        "renderType": {
-          "type": "string",
-          "enum": ["Single Symbol", "Graduated", "Categorized"]
-        },
-        "value": {
-          "type": "string"
-        },
-        "method": {
-          "type": "string",
-          "enum": ["color", "radius"]
-        },
-        "colorRamp": {
-          "type": "string",
-          "default": "cool"
-        },
-        "nClasses": {
-          "type": "string",
-          "default": "9"
+        "color": {
+          "$ref": "project/layers/symbology/vectorGraduatedColor.json"
         },
-        "mode": {
-          "type": "string",
-          "default": "equal interval",
-          "enum": [
-            "quantile",
-            "equal interval",
-            "jenks",
-            "pretty",
-            "logarithmic"
-          ]
+        "size": {
+          "$ref": "project/layers/symbology/vectorGraduatedSize.json"
         }
-      },
-      "additionalProperties": false
+      }
     }
   }
 }
diff --git a/packages/schema/src/types.ts b/packages/schema/src/types.ts
index c6e2cd86d..16c356ead 100644
--- a/packages/schema/src/types.ts
+++ b/packages/schema/src/types.ts
@@ -1,3 +1,8 @@
+/*
+ * A "barrel" file (https://basarat.gitbook.io/typescript/main-1/barrel) making all
+ * types generated from JSONSchemas in the `schemas` directory available for
+ * import.
+ */
 export * from './_interface/project/jgis';
 
 // Sources
@@ -21,6 +26,22 @@ export * from './_interface/project/layers/stacLayer';
 export * from './_interface/project/layers/vectorTileLayer';
 export * from './_interface/project/layers/webGlLayer';
 
+// Symbology
+// Use namespaced exports to avoid duplicate interface exports when $ref schemas
+// are inlined by json-schema-to-typescript. This can be removed once
+// https://github.com/bcherny/json-schema-to-typescript/pull/662 is merged.
+export * as SymbologyVectorSimpleColor from './_interface/project/layers/symbology/vectorSimpleColor';
+export * as SymbologyVectorSimpleSize from './_interface/project/layers/symbology/vectorSimpleSize';
+export * as SymbologyVectorGraduatedColor from './_interface/project/layers/symbology/vectorGraduatedColor';
+export * as SymbologyVectorGraduatedSize from './_interface/project/layers/symbology/vectorGraduatedSize';
+export * as SymbologyVectorCategorizedColor from './_interface/project/layers/symbology/vectorCategorizedColor';
+export * as SymbologyVectorCategorizedSize from './_interface/project/layers/symbology/vectorCategorizedSize';
+export * as SymbologyVectorCanonicalColor from './_interface/project/layers/symbology/vectorCanonicalColor';
+export * as SymbologyVectorHeatmapColor from './_interface/project/layers/symbology/vectorHeatmapColor';
+export * as SymbologyGeoTiffSingleBand from './_interface/project/layers/symbology/geoTiffSingleBand';
+export * as SymbologyGeoTiffMultiBand from './_interface/project/layers/symbology/geoTiffMultiBand';
+
+
 // Processing
 export * from './processing/_generated/exportProcessingSchema';
 
@@ -28,6 +49,7 @@ export * from './processing/_generated/exportProcessingSchema';
 export * from './_interface/export/exportGeoJson';
 export * from './_interface/export/exportGeoTiff';
 
+
 // Other
 export * from './doc';
 export * from './index';