diff --git a/lib/extract/extractColor.js b/lib/extract/extractColor.js
index 48fd7f78..436dbbf5 100644
--- a/lib/extract/extractColor.js
+++ b/lib/extract/extractColor.js
@@ -149,124 +149,6 @@ const colorNames = {
   yellowgreen: [154, 205, 50],
 };
 
-function clamp(num, min, max) {
-  return Math.min(Math.max(min, num), max);
-}
-
-const abbr = /^#([a-f0-9]{3,4})$/i;
-const hex = /^#([a-f0-9]{6})([a-f0-9]{2})?$/i;
-const rgba = /^rgba?\(\s*([+-]?\d+)\s*,\s*([+-]?\d+)\s*,\s*([+-]?\d+)\s*(?:,\s*([+-]?[\d.]+)\s*)?\)$/;
-const per = /^rgba?\(\s*([+-]?[\d.]+)%\s*,\s*([+-]?[\d.]+)%\s*,\s*([+-]?[\d.]+)%\s*(?:,\s*([+-]?[\d.]+)\s*)?\)$/;
-const keyword = /(\D+)/;
-
-function rgbFromString(string) {
-  let rgb = [0, 0, 0, 1];
-  let match;
-  let i;
-  let hexAlpha;
-
-  if ((match = string.match(hex))) {
-    hexAlpha = match[2];
-    match = match[1];
-
-    for (i = 0; i < 3; i++) {
-      // https://jsperf.com/slice-vs-substr-vs-substring-methods-long-string/19
-      const i2 = i * 2;
-      rgb[i] = parseInt(match.slice(i2, i2 + 2), 16);
-    }
-
-    if (hexAlpha) {
-      rgb[3] = Math.round((parseInt(hexAlpha, 16) / 255) * 100) / 100;
-    }
-  } else if ((match = string.match(abbr))) {
-    match = match[1];
-    hexAlpha = match[3];
-
-    for (i = 0; i < 3; i++) {
-      rgb[i] = parseInt(match[i] + match[i], 16);
-    }
-
-    if (hexAlpha) {
-      rgb[3] =
-        Math.round((parseInt(hexAlpha + hexAlpha, 16) / 255) * 100) / 100;
-    }
-  } else if ((match = string.match(rgba))) {
-    for (i = 0; i < 3; i++) {
-      rgb[i] = parseInt(match[i + 1], 0);
-    }
-
-    if (match[4]) {
-      rgb[3] = parseFloat(match[4]);
-    }
-  } else if ((match = string.match(per))) {
-    for (i = 0; i < 3; i++) {
-      rgb[i] = Math.round(parseFloat(match[i + 1]) * 2.55);
-    }
-
-    if (match[4]) {
-      rgb[3] = parseFloat(match[4]);
-    }
-  } else if ((match = string.match(keyword))) {
-    if (match[1] === 'transparent') {
-      return [0, 0, 0, 0];
-    }
-
-    rgb = colorNames[match[1]];
-
-    if (!rgb) {
-      return null;
-    }
-
-    rgb[3] = 1;
-
-    return rgb;
-  } else {
-    return null;
-  }
-
-  for (i = 0; i < 3; i++) {
-    rgb[i] = clamp(rgb[i], 0, 255);
-  }
-  rgb[3] = clamp(rgb[3], 0, 1);
-
-  return rgb;
-}
-
-const hslRegEx = /^hsla?\(\s*([+-]?(?:\d*\.)?\d+)(?:deg)?\s*,\s*([+-]?[\d.]+)%\s*,\s*([+-]?[\d.]+)%\s*(?:,\s*([+-]?[\d.]+)\s*)?\)$/;
-
-function hslFromString(string) {
-  const match = string.match(hslRegEx);
-
-  if (match) {
-    const alpha = parseFloat(match[4]);
-    const h = (parseFloat(match[1]) + 360) % 360;
-    const s = clamp(parseFloat(match[2]), 0, 100);
-    const l = clamp(parseFloat(match[3]), 0, 100);
-    const a = clamp(isNaN(alpha) ? 1 : alpha, 0, 1);
-
-    return [h, s, l, a];
-  }
-
-  return null;
-}
-
-const hwbRegEx = /^hwb\(\s*([+-]?\d*[.]?\d+)(?:deg)?\s*,\s*([+-]?[\d.]+)%\s*,\s*([+-]?[\d.]+)%\s*(?:,\s*([+-]?[\d.]+)\s*)?\)$/;
-
-function hwbFromString(string) {
-  const match = string.match(hwbRegEx);
-
-  if (match) {
-    const alpha = parseFloat(match[4]);
-    const h = ((parseFloat(match[1]) % 360) + 360) % 360;
-    const w = clamp(parseFloat(match[2]), 0, 100);
-    const b = clamp(parseFloat(match[3]), 0, 100);
-    const a = clamp(isNaN(alpha) ? 1 : alpha, 0, 1);
-    return [h, w, b, a];
-  }
-
-  return null;
-}
-
 function hslToRgb(hsl) {
   const h = hsl[0] / 360;
   const s = hsl[1] / 100;
@@ -383,32 +265,137 @@ function hwbToRgb(hwb) {
   return [r * 255, g * 255, b * 255];
 }
 
-export default function extractColor(string) {
-  if (!string || typeof string !== 'string') {
+function clamp(num, min, max) {
+  return Math.min(Math.max(min, num), max);
+}
+
+const abbr = /^#([a-f0-9]{3,4})$/i;
+const hex = /^#([a-f0-9]{6})([a-f0-9]{2})?$/i;
+const rgba = /^rgba?\(\s*([+-]?\d+)\s*,\s*([+-]?\d+)\s*,\s*([+-]?\d+)\s*(?:,\s*([+-]?[\d.]+)\s*)?\)$/;
+const per = /^rgba?\(\s*([+-]?[\d.]+)%\s*,\s*([+-]?[\d.]+)%\s*,\s*([+-]?[\d.]+)%\s*(?:,\s*([+-]?[\d.]+)\s*)?\)$/;
+const keyword = /(\D+)/;
+
+function rgbFromString(string) {
+  let rgb = [0, 0, 0, 1];
+  let match;
+  let i;
+  let hexAlpha;
+
+  if ((match = string.match(hex))) {
+    hexAlpha = match[2];
+    match = match[1];
+
+    for (i = 0; i < 3; i++) {
+      // https://jsperf.com/slice-vs-substr-vs-substring-methods-long-string/19
+      const i2 = i * 2;
+      rgb[i] = parseInt(match.slice(i2, i2 + 2), 16);
+    }
+
+    if (hexAlpha) {
+      rgb[3] = Math.round((parseInt(hexAlpha, 16) / 255) * 100) / 100;
+    }
+  } else if ((match = string.match(abbr))) {
+    match = match[1];
+    hexAlpha = match[3];
+
+    for (i = 0; i < 3; i++) {
+      rgb[i] = parseInt(match[i] + match[i], 16);
+    }
+
+    if (hexAlpha) {
+      rgb[3] =
+        Math.round((parseInt(hexAlpha + hexAlpha, 16) / 255) * 100) / 100;
+    }
+  } else if ((match = string.match(rgba))) {
+    for (i = 0; i < 3; i++) {
+      rgb[i] = parseInt(match[i + 1], 0);
+    }
+
+    if (match[4]) {
+      rgb[3] = parseFloat(match[4]);
+    }
+  } else if ((match = string.match(per))) {
+    for (i = 0; i < 3; i++) {
+      rgb[i] = Math.round(parseFloat(match[i + 1]) * 2.55);
+    }
+
+    if (match[4]) {
+      rgb[3] = parseFloat(match[4]);
+    }
+  } else if ((match = string.match(keyword))) {
+    if (match[1] === 'transparent') {
+      return [0, 0, 0, 0];
+    }
+
+    rgb = colorNames[match[1]];
+
+    if (!rgb) {
+      return null;
+    }
+
+    rgb[3] = 1;
+
+    return rgb;
+  } else {
     return null;
   }
 
+  for (i = 0; i < 3; i++) {
+    rgb[i] = clamp(rgb[i], 0, 255);
+  }
+  rgb[3] = clamp(rgb[3], 0, 1);
+
+  return rgb;
+}
+
+const hslRegEx = /^hsla?\(\s*([+-]?(?:\d*\.)?\d+)(?:deg)?\s*,\s*([+-]?[\d.]+)%\s*,\s*([+-]?[\d.]+)%\s*(?:,\s*([+-]?[\d.]+)\s*)?\)$/;
+
+function rgbFromHslString(string) {
+  const match = string.match(hslRegEx);
+
+  if (match) {
+    const alpha = parseFloat(match[4]);
+    const h = (parseFloat(match[1]) + 360) % 360;
+    const s = clamp(parseFloat(match[2]), 0, 100);
+    const l = clamp(parseFloat(match[3]), 0, 100);
+    const a = clamp(isNaN(alpha) ? 1 : alpha, 0, 1);
+
+    return hslToRgb([h, s, l, a]);
+  }
+
+  return null;
+}
+
+const hwbRegEx = /^hwb\(\s*([+-]?\d*[.]?\d+)(?:deg)?\s*,\s*([+-]?[\d.]+)%\s*,\s*([+-]?[\d.]+)%\s*(?:,\s*([+-]?[\d.]+)\s*)?\)$/;
+
+function rgbFromHwbString(string) {
+  const match = string.match(hwbRegEx);
+
+  if (match) {
+    const alpha = parseFloat(match[4]);
+    const h = ((parseFloat(match[1]) % 360) + 360) % 360;
+    const w = clamp(parseFloat(match[2]), 0, 100);
+    const b = clamp(parseFloat(match[3]), 0, 100);
+    const a = clamp(isNaN(alpha) ? 1 : alpha, 0, 1);
+    return hwbToRgb([h, w, b, a]);
+  }
+
+  return null;
+}
+
+export default function extractColor(string) {
+  if (typeof string !== 'string') {
+    return string;
+  }
+
   const prefix = string.substring(0, 3).toLowerCase();
 
-  let value;
-  let converter;
   switch (prefix) {
     case 'hsl':
-      value = hslFromString(string);
-      converter = hslToRgb;
-      break;
+      return rgbFromHslString(string);
     case 'hwb':
-      value = hwbFromString(string);
-      converter = hwbToRgb;
-      break;
+      return rgbFromHwbString(string);
     default:
-      value = rgbFromString(string);
-      break;
+      return rgbFromString(string);
   }
-
-  if (!value) {
-    return null;
-  }
-
-  return converter ? converter(value).concat(value[3]) : value;
 }