Fix RGB->HSL precision issues

Moved back to chromatism. Well worth it for the accuracy.

app/soapbox/utils/theme.js

@@ -1,5 +1,5 @@
 import { Map as ImmutableMap } from 'immutable';
-import hexToHsl from 'hex-to-hsl';
+import { convert } from 'chromatism';
 
 export const generateThemeCss = brandColor => {
   if (!brandColor) return null;
@@ -7,7 +7,7 @@ export const generateThemeCss = brandColor => {
 };
 
 export const brandColorToThemeData = brandColor => {
-  const [ h, s, l ] = hexToHsl(brandColor);
+  const { h, s, l } = convert(brandColor).hsl;
   return ImmutableMap({
     'brand-color_h': h,
     'brand-color_s': `${s}%`,

package.json

@@ -56,6 +56,7 @@
     "babel-plugin-transform-react-remove-prop-types": "^0.4.24",
     "babel-runtime": "^6.26.0",
     "blurhash": "^1.0.0",
+    "chromatism": "^3.0.0",
     "classnames": "^2.2.5",
     "compression-webpack-plugin": "^3.0.0",
     "cross-env": "^6.0.0",
@@ -71,7 +72,6 @@
     "file-loader": "^4.0.0",
     "font-awesome": "^4.7.0",
     "glob": "^7.1.1",
-    "hex-to-hsl": "^1.0.2",
     "html-webpack-harddisk-plugin": "^1.0.1",
     "html-webpack-plugin": "^4.3.0",
     "http-link-header": "^1.0.2",

yarn.lock

@@ -3055,6 +3055,11 @@ chownr@^1.1.1:
   resolved "https://registry.yarnpkg.com/chownr/-/chownr-1.1.1.tgz#54726b8b8fff4df053c42187e801fb4412df1494"
   integrity sha512-j38EvO5+LHX84jlo6h4UzmOwi0UgW61WRyPtJz4qaadK5eY3BTS5TY/S1Stc3Uk2lIM6TPevAlULiEJwie860g==
 
+chromatism@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/chromatism/-/chromatism-3.0.0.tgz#a7249d353c1e4f3577e444ac41171c4e2e624b12"
+  integrity sha1-pySdNTweTzV35ESsQRccTi5iSxI=
+
 chrome-trace-event@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/chrome-trace-event/-/chrome-trace-event-1.0.2.tgz#234090ee97c7d4ad1a2c4beae27505deffc608a4"
@@ -5607,19 +5612,6 @@ hex-color-regex@^1.1.0:
   resolved "https://registry.yarnpkg.com/hex-color-regex/-/hex-color-regex-1.1.0.tgz#4c06fccb4602fe2602b3c93df82d7e7dbf1a8a8e"
   integrity sha512-l9sfDFsuqtOqKDsQdqrMRk0U85RZc0RtOR9yPI7mRVOa4FsR/BVnZ0shmQRM96Ji99kYZP/7hn1cedc1+ApsTQ==
 
-hex-to-hsl@^1.0.2:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/hex-to-hsl/-/hex-to-hsl-1.0.2.tgz#d5c59ece00178444e821c8fc58a430afc09831c2"
-  integrity sha1-1cWezgAXhEToIcj8WKQwr8CYMcI=
-  dependencies:
-    hex-to-rgb "^1.0.1"
-    rgb-to-hsl "0.0.2"
-
-hex-to-rgb@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/hex-to-rgb/-/hex-to-rgb-1.0.1.tgz#100b9df126b32f2762adf8486be68c65ef8ed2a4"
-  integrity sha1-EAud8SazLydirfhIa+aMZe+O0qQ=
-
 history@^4.7.2:
   version "4.10.1"
   resolved "https://registry.yarnpkg.com/history/-/history-4.10.1.tgz#33371a65e3a83b267434e2b3f3b1b4c58aad4cf3"
@@ -10214,11 +10206,6 @@ rgb-regex@^1.0.1:
   resolved "https://registry.yarnpkg.com/rgb-regex/-/rgb-regex-1.0.1.tgz#c0e0d6882df0e23be254a475e8edd41915feaeb1"
   integrity sha1-wODWiC3w4jviVKR16O3UGRX+rrE=
 
-rgb-to-hsl@0.0.2:
-  version "0.0.2"
-  resolved "https://registry.yarnpkg.com/rgb-to-hsl/-/rgb-to-hsl-0.0.2.tgz#36f9fc286376b90acc457e699005b4cb42d350ec"
-  integrity sha1-Nvn8KGN2uQrMRX5pkAW0y0LTUOw=
-
 rgba-regex@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/rgba-regex/-/rgba-regex-1.0.0.tgz#43374e2e2ca0968b0ef1523460b7d730ff22eeb3"