diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 50a2d53..3a44311 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -23,5 +23,6 @@ jobs:
         node-version: ${{ matrix.node-version }}
     - run: npm ci
     - run: npm run build -- --no-minify
+    - run: npm run prettier:check
     - run: npm run typecheck
     - run: npm test
diff --git a/.prettierignore b/.prettierignore
new file mode 100644
index 0000000..7db7487
--- /dev/null
+++ b/.prettierignore
@@ -0,0 +1 @@
+lib/_svg-vocabulary.ts
diff --git a/README.md b/README.md
index 6f72fd3..269cfa7 100644
--- a/README.md
+++ b/README.md
@@ -29,6 +29,20 @@ To run tests interactively, run:
 npm run test:watch
 ```
 
+## Code style
+
+All code styling is managed by [Prettier][].
+
+To format the code automatically, run:
+
+```
+npm run prettier:fix
+```
+
+You can alternatively install a Prettier extension for your editor; see its website for more details.
+
+[Prettier]: https://prettier.io/
+
 ## Deployment
 
 To deploy the project to GitHub Pages, run:
diff --git a/lib/random-colors.ts b/lib/random-colors.ts
index 9a7ecb2..1830551 100644
--- a/lib/random-colors.ts
+++ b/lib/random-colors.ts
@@ -1,6 +1,6 @@
 import { Random } from "./random";
 import { range } from "./util";
-import * as colorspaces from 'colorspaces';
+import * as colorspaces from "colorspaces";
 
 /**
  * Clamp the given number to be between 0 and 255, then
@@ -20,38 +20,40 @@ export function clampedByteToHex(value: number): string {
 }
 
 function createRandomColor(rng: Random): string {
-    const max_luv_samples = 100;
-    let luv_sample_failed = true;
-    let rand_color_hex:string = "#000000";
+  const max_luv_samples = 100;
+  let luv_sample_failed = true;
+  let rand_color_hex: string = "#000000";
 
-    //See if we can pull out a sample inside the LUV solid
-    for (let i=0; i<max_luv_samples; i++) {
-	let L = rng.inRange({ min: 0, max: 100, step: 1 });
-	let u = rng.inRange({ min: -128, max: 128, step: 1 });
-	let v = rng.inRange({ min: -128, max: 128, step: 1 });
-	let rand_color = colorspaces.make_color('CIELUV', [L, u, v]);
-	
-	if(rand_color.is_displayable()) {
-	    rand_color_hex = rand_color.as('hex');
-	    luv_sample_failed = false;
-	    break;
-	}
+  //See if we can pull out a sample inside the LUV solid
+  for (let i = 0; i < max_luv_samples; i++) {
+    let L = rng.inRange({ min: 0, max: 100, step: 1 });
+    let u = rng.inRange({ min: -128, max: 128, step: 1 });
+    let v = rng.inRange({ min: -128, max: 128, step: 1 });
+    let rand_color = colorspaces.make_color("CIELUV", [L, u, v]);
+
+    if (rand_color.is_displayable()) {
+      rand_color_hex = rand_color.as("hex");
+      luv_sample_failed = false;
+      break;
     }
+  }
 
-    //just sample sRGB if I couldn't sample a random LUV color
-    if(luv_sample_failed) {
-	console.log("Sampling sRGB")
-	let rgb = (new Array<number>(3)).map(() => rng.inRange({ min: 0, max: 255, step: 1 }));
-	console.log(rgb)
-	for(let i=0; i<rgb.length; i++) {
-	    rgb[i] = rgb[i]/255.0;
-	}
-	console.log(rgb)
-	let rand_color = colorspaces.make_color('sRGB',rgb);
-	rand_color_hex = rand_color.as('hex');
+  //just sample sRGB if I couldn't sample a random LUV color
+  if (luv_sample_failed) {
+    console.log("Sampling sRGB");
+    let rgb = new Array<number>(3).map(() =>
+      rng.inRange({ min: 0, max: 255, step: 1 })
+    );
+    console.log(rgb);
+    for (let i = 0; i < rgb.length; i++) {
+      rgb[i] = rgb[i] / 255.0;
     }
+    console.log(rgb);
+    let rand_color = colorspaces.make_color("sRGB", rgb);
+    rand_color_hex = rand_color.as("hex");
+  }
 
-    return rand_color_hex;
+  return rand_color_hex;
 }
 
 /**
diff --git a/package.json b/package.json
index 606e170..f7cc39e 100644
--- a/package.json
+++ b/package.json
@@ -5,6 +5,8 @@
   "main": "index.js",
   "scripts": {
     "deploy": "npm run build && gh-pages -d dist",
+    "prettier:check": "prettier --check lib/**/*.ts lib/**/*.ts",
+    "prettier:fix": "prettier --write   lib/**/*.ts lib/**/*.ts",
     "typecheck": "tsc --noemit",
     "test:watch": "jest --watch",
     "test": "jest",