diff --git a/README.md b/README.md
index 4cf147635..96bd8c600 100644
--- a/README.md
+++ b/README.md
@@ -152,7 +152,7 @@ Validator                               | Description
 **isPort(str)**                         | check if the string is a valid port number.
 **isPostalCode(str, locale)**           | check if the string is a postal code.<br/><br/>`locale` is one of `['AD', 'AT', 'AU', 'AZ', 'BA', 'BE', 'BG', 'BR', 'BY', 'CA', 'CH', 'CN', 'CZ', 'DE', 'DK', 'DO', 'DZ', 'EE', 'ES', 'FI', 'FR', 'GB', 'GR', 'HR', 'HT', 'HU', 'ID', 'IE', 'IL', 'IN', 'IR', 'IS', 'IT', 'JP', 'KE', 'KR', 'LI', 'LK', 'LT', 'LU', 'LV', 'MG', 'MT', 'MX', 'MY', 'NL', 'NO', 'NP', 'NZ', 'PL', 'PR', 'PT', 'RO', 'RU', 'SA', 'SE', 'SG', 'SI', 'SK', 'TH', 'TN', 'TW', 'UA', 'US', 'ZA', 'ZM']` OR `'any'`. If 'any' is used, function will check if any of the locales match. Locale list is `validator.isPostalCodeLocales`.
 **isRFC3339(str)**                      | check if the string is a valid [RFC 3339][RFC 3339] date.
-**isRgbColor(str [, includePercentValues])**                     | check if the string is a rgb or rgba color.<br/><br/>`includePercentValues` defaults to `true`. If you don't want to allow to set `rgb` or `rgba` values with percents, like `rgb(5%,5%,5%)`, or `rgba(90%,90%,90%,.3)`, then set it to false.
+**isRgbColor(str [,options])**                     | check if the string is a rgb or rgba color.<br/></br>`options` is an object with the following properties<br/><br/>`includePercentValues` defaults to `true`. If you don't want to allow to set `rgb` or `rgba` values with percents, like `rgb(5%,5%,5%)`, or `rgba(90%,90%,90%,.3)`, then set it to false.<br/><br/>`allowSpaces` defaults to `true`, which prohibits whitespace. If set to false, whitespace between color values is allowed, such as `rgb(255, 255, 255)` or even `rgba(255,       128,        0,      0.7)`.
 **isSemVer(str)**                       | check if the string is a Semantic Versioning Specification (SemVer).
 **isSurrogatePair(str)**                | check if the string contains any surrogate pairs chars.
 **isUppercase(str)**                    | check if the string is uppercase.
diff --git a/src/lib/isRgbColor.js b/src/lib/isRgbColor.js
index 9458522ab..5267d563d 100644
--- a/src/lib/isRgbColor.js
+++ b/src/lib/isRgbColor.js
@@ -1,12 +1,35 @@
+/* eslint-disable prefer-rest-params */
 import assertString from './util/assertString';
 
 const rgbColor = /^rgb\((([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5]),){2}([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\)$/;
 const rgbaColor = /^rgba\((([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5]),){3}(0?\.\d|1(\.0)?|0(\.0)?)\)$/;
 const rgbColorPercent = /^rgb\((([0-9]%|[1-9][0-9]%|100%),){2}([0-9]%|[1-9][0-9]%|100%)\)$/;
 const rgbaColorPercent = /^rgba\((([0-9]%|[1-9][0-9]%|100%),){3}(0?\.\d|1(\.0)?|0(\.0)?)\)$/;
+const startsWithRgb = /^rgba?/;
 
-export default function isRgbColor(str, includePercentValues = true) {
+export default function isRgbColor(str, options) {
   assertString(str);
+  // default options to true for percent and false for spaces
+  let allowSpaces = false;
+  let includePercentValues = true;
+  if (typeof options !== 'object') {
+    if (arguments.length >= 2) {
+      includePercentValues = arguments[1];
+    }
+  } else {
+    allowSpaces = options.allowSpaces !== undefined ? options.allowSpaces : allowSpaces;
+    includePercentValues = options.includePercentValues !== undefined ?
+      options.includePercentValues : includePercentValues;
+  }
+
+  if (allowSpaces) {
+    // make sure it starts with continous rgba? without spaces before stripping
+    if (!startsWithRgb.test(str)) {
+      return false;
+    }
+    // strip all whitespace
+    str = str.replace(/\s/g, '');
+  }
 
   if (!includePercentValues) {
     return rgbColor.test(str) || rgbaColor.test(str);
diff --git a/test/validators.test.js b/test/validators.test.js
index 6b603ff1b..252fae1e0 100644
--- a/test/validators.test.js
+++ b/test/validators.test.js
@@ -4580,9 +4580,53 @@ describe('Validators', () => {
         'rgba(3%,3%,101%,0.3)',
         'rgb(101%,101%,101%) additional invalid string part',
         'rgba(3%,3%,101%,0.3) additional invalid string part',
+        'r         g    b(   0,         251,       222     )',
+        'r         g    ba(   0,         251,       222     )',
+        'rg ba(0, 251, 22, 0.5)',
+        'rgb( 255,255 ,255)',
+        'rgba(255, 255, 255, 0.5)',
+        'rgba(255, 255, 255, 0.5)',
+        'rgb(5%, 5%, 5%)',
       ],
     });
 
+    // test empty options object
+    test({
+      validator: 'isRgbColor',
+      args: [{}],
+      valid: [
+        'rgb(0,0,0)',
+        'rgb(255,255,255)',
+        'rgba(0,0,0,0)',
+        'rgba(255,255,255,1)',
+        'rgba(255,255,255,.1)',
+        'rgba(255,255,255,0.1)',
+        'rgb(5%,5%,5%)',
+        'rgba(5%,5%,5%,.3)',
+      ],
+      invalid: [
+        'rgb(0,0,0,)',
+        'rgb(0,0,)',
+        'rgb(0,0,256)',
+        'rgb()',
+        'rgba(0,0,0)',
+        'rgba(255,255,255,2)',
+        'rgba(255,255,255,.12)',
+        'rgba(255,255,256,0.1)',
+        'rgb(4,4,5%)',
+        'rgba(5%,5%,5%)',
+        'rgba(3,3,3%,.3)',
+        'rgb(101%,101%,101%)',
+        'rgba(3%,3%,101%,0.3)',
+        'r         g    b(   0,         251,       222     )',
+        'r         g    ba(   0,         251,       222     )',
+        'rg ba(0, 251, 22, 0.5)',
+        'rgb( 255,255 ,255)',
+        'rgba(255, 255, 255, 0.5)',
+        'rgba(255, 255, 255, 0.5)',
+        'rgb(5%, 5%, 5%)',
+      ],
+    });
     // test where includePercentValues is given as false
     test({
       validator: 'isRgbColor',
@@ -4594,6 +4638,159 @@ describe('Validators', () => {
       invalid: [
         'rgb(4,4,5%)',
         'rgba(5%,5%,5%)',
+        'r         g    b(   0,         251,       222     )',
+        'r         g    ba(   0,         251,       222     )',
+      ],
+    });
+
+    // test where includePercentValues is given as false as part of options object
+    test({
+      validator: 'isRgbColor',
+      args: [{ includePercentValues: false }],
+      valid: [
+        'rgb(5,5,5)',
+        'rgba(5,5,5,.3)',
+      ],
+      invalid: [
+        'rgb(4,4,5%)',
+        'rgba(5%,5%,5%)',
+        'r         g    b(   0,         251,       222     )',
+        'rgba(255, 255, 255 ,0.2)',
+        'r         g    ba(   0,         251,       222     )',
+      ],
+    });
+
+    // test where include percent is true explciitly
+    test({
+      validator: 'isRgbColor',
+      args: [true],
+      valid: [
+        'rgb(5,5,5)',
+        'rgba(5,5,5,.3)',
+        'rgb(0,0,0)',
+        'rgb(255,255,255)',
+        'rgba(0,0,0,0)',
+        'rgba(255,255,255,1)',
+        'rgba(255,255,255,.1)',
+        'rgba(255,255,255,0.1)',
+        'rgb(5%,5%,5%)',
+        'rgba(5%,5%,5%,.3)',
+        'rgb(5%,5%,5%)',
+        'rgba(255,255,255,0.5)',
+      ],
+      invalid: [
+        'rgba(255, 255, 255, 0.5)',
+        'rgb(5%, 5%, 5%)',
+        'rgb(4,4,5%)',
+        'rgba(5%,5%,5%)',
+        'r         g    b(   0,         251,       222     )',
+        'r         g    ba(   0,         251,       222     )',
+        'rgb(0,0,0,)',
+        'rgb(0,0,)',
+        'rgb(0,0,256)',
+        'rgb()',
+        'rgba(0,0,0)',
+        'rgba(255,255,255,2)',
+        'rgba(255,255,255,.12)',
+        'rgba(255,255,256,0.1)',
+        'rgb(4,4,5%)',
+        'rgba(5%,5%,5%)',
+        'rgba(3,3,3%,.3)',
+        'rgb(101%,101%,101%)',
+        'rgba(3%,3%,101%,0.3)',
+      ],
+    });
+
+    // test where percent value is false and allowSpaces is true as part of options object
+    test({
+      validator: 'isRgbColor',
+      args: [{ includePercentValues: false, allowSpaces: true }],
+      valid: [
+        'rgb(5,5,5)',
+        'rgba(5,5,5,.3)',
+        'rgba(255,255,255,0.2)',
+        'rgba(255, 255, 255 ,0.2)',
+      ],
+      invalid: [
+        'rgb(4,4,5%)',
+        'rgba(5%,5%,5%)',
+        'rgba(5% ,5%, 5%)',
+        'r         g    b(   0,         251,       222     )',
+        'r         g    ba(   0,         251,       222     )',
+        'rgb(0,0,)',
+        'rgb()',
+        'rgb(4,4,5%)',
+        'rgb(5%,5%,5%)',
+        'rgba(3,3,3%,.3)',
+        'rgb(101%, 101%, 101%)',
+        'rgba(3%,3%,101%,0.3)',
+      ],
+
+    });
+
+    // test where both are true as part of options object
+    test({
+      validator: 'isRgbColor',
+      args: [{ includePercentValues: true, allowSpaces: true }],
+      valid: [
+        'rgb(  5, 5, 5)',
+        'rgba(5, 5, 5, .3)',
+        'rgb(0, 0, 0)',
+        'rgb(255, 255, 255)',
+        'rgba(0, 0, 0, 0)',
+        'rgba(255, 255, 255, 1)',
+        'rgba(255, 255, 255, .1)',
+        'rgba(255, 255, 255, 0.1)',
+        'rgb(5% ,5% ,5%)',
+        'rgba(5%,5%,5%, .3)',
+      ],
+      invalid: [
+        'r         g    b(   0,         251,       222     )',
+        'rgb(4,4,5%)',
+        'rgb(101%,101%,101%)',
+
+      ],
+    });
+
+    // test where allowSpaces is false as part of options object
+    test({
+      validator: 'isRgbColor',
+      args: [{ includePercentValues: true, allowSpaces: false }],
+      valid: [
+        'rgb(5,5,5)',
+        'rgba(5,5,5,.3)',
+        'rgb(0,0,0)',
+        'rgb(255,255,255)',
+        'rgba(0,0,0,0)',
+        'rgba(255,255,255,1)',
+        'rgba(255,255,255,.1)',
+        'rgba(255,255,255,0.1)',
+        'rgb(5%,5%,5%)',
+        'rgba(5%,5%,5%,.3)',
+
+      ],
+      invalid: [
+        'rgb( 255,255 ,255)',
+        'rgba(255, 255, 255, 0.5)',
+        'rgb(5%, 5%, 5%)',
+        'rgba(255, 255, 255, 0.5)',
+        'rgb(4,4,5%)',
+        'rgba(5%,5%,5%)',
+        'r         g    b(   0,         251,       222     )',
+        'r         g    ba(   0,         251,       222     )',
+        'rgb(0,0,0,)',
+        'rgb(0,0,)',
+        'rgb(0,0,256)',
+        'rgb()',
+        'rgba(0,0,0)',
+        'rgba(255,255,255,2)',
+        'rgba(255,255,255,.12)',
+        'rgba(255,255,256,0.1)',
+        'rgb(4,4,5%)',
+        'rgba(5%,5%,5%)',
+        'rgba(3,3,3%,.3)',
+        'rgb(101%,101%,101%)',
+        'rgba(3%,3%,101%,0.3)',
       ],
     });
   });