diff --git a/index.js b/index.js
index ade033b..023e24d 100644
--- a/index.js
+++ b/index.js
@@ -52,7 +52,7 @@ cs.get.rgb = function (string) {
 
 	const abbr = /^#([a-f\d]{3,4})$/i;
 	const hex = /^#([a-f\d]{6})([a-f\d]{2})?$/i;
-	const rgba = /^rgba?\(\s*([+-]?\d+)(?=[\s,])\s*(?:,\s*)?([+-]?\d+)(?=[\s,])\s*(?:,\s*)?([+-]?\d+)\s*(?:[\s,|/]\s*([+-]?[\d.]+)(%?)\s*)?\)$/;
+	const rgba = /^rgba?\(\s*([+-]?(?:\d*\.)?\d+(?:e\d+)?)(?=[\s,])\s*(?:,\s*)?([+-]?(?:\d*\.)?\d+(?:e\d+)?)(?=[\s,])\s*(?:,\s*)?([+-]?(?:\d*\.)?\d+(?:e\d+)?)\s*(?:[\s,|/]\s*([+-]?(?:\d*\.)?\d+(?:e\d+)?)(%?)\s*)?\)$/i;
 	const per = /^rgba?\(\s*([+-]?[\d.]+)%\s*,?\s*([+-]?[\d.]+)%\s*,?\s*([+-]?[\d.]+)%\s*(?:[\s,|/]\s*([+-]?[\d.]+)(%?)\s*)?\)$/;
 	const keyword = /^(\w+)$/;
 
@@ -87,7 +87,7 @@ cs.get.rgb = function (string) {
 		}
 	} else if (match = string.match(rgba)) {
 		for (i = 0; i < 3; i++) {
-			rgb[i] = Number.parseInt(match[i + 1], 10);
+			rgb[i] = Number.parseFloat(match[i + 1]);
 		}
 
 		if (match[4]) {
diff --git a/test.js b/test.js
index abd365c..2342b25 100644
--- a/test.js
+++ b/test.js
@@ -15,6 +15,10 @@ assert.deepEqual(string.get.rgb('#fef'), [255, 238, 255, 1]);
 assert.deepEqual(string.get.rgb('#fffFEF'), [255, 255, 239, 1]);
 assert.deepEqual(string.get.rgb('rgb(244, 233, 100)'), [244, 233, 100, 1]);
 assert.deepEqual(string.get.rgb('rgb(244 233 100)'), [244, 233, 100, 1]);
+assert.deepEqual(string.get.rgb('rgb(244.5, 233.5, 100.5)'), [244.5, 233.5, 100.5, 1]);
+assert.deepEqual(string.get.rgb('rgb(244.5 233.5 100.5)'), [244.5, 233.5, 100.5, 1]);
+assert.deepEqual(string.get.rgb('rgb(2.44E2, 2.33e2, 1.00E2)'), [244, 233, 100, 1]);
+assert.deepEqual(string.get.rgb('rgb(2.44E2 2.33e2 1.00E2)'), [244, 233, 100, 1]);
 assert.deepEqual(string.get.rgb('rgb(100%, 30%, 90%)'), [255, 77, 229, 1]);
 assert.deepEqual(string.get.rgb('rgb(100% 30% 90%)'), [255, 77, 229, 1]);
 assert.deepEqual(string.get.rgb('transparent'), [0, 0, 0, 0]);
@@ -35,6 +39,10 @@ assert.deepEqual(string.get('#fffFEF00'), {model: 'rgb', value: [255, 255, 239,
 assert.deepEqual(normalizeAlpha(string.get('#fffFEFa9')), {model: 'rgb', value: [255, 255, 239, '0.66']});
 assert.deepEqual(string.get('rgb(244, 233, 100)'), {model: 'rgb', value: [244, 233, 100, 1]});
 assert.deepEqual(string.get('rgb(244 233 100)'), {model: 'rgb', value: [244, 233, 100, 1]});
+assert.deepEqual(string.get('rgb(244.5, 233.5, 100.5)'), {model: 'rgb', value: [244.5, 233.5, 100.5, 1]});
+assert.deepEqual(string.get('rgb(244.5 233.5 100.5)'), {model: 'rgb', value: [244.5, 233.5, 100.5, 1]});
+assert.deepEqual(string.get('rgb(2.44E2, 2.33e2, 1.00E2)'), {model: 'rgb', value: [244, 233, 100, 1]});
+assert.deepEqual(string.get('rgb(2.44E2 2.33e2 1.00E2)'), {model: 'rgb', value: [244, 233, 100, 1]});
 assert.deepEqual(string.get('rgb(100%, 30%, 90%)'), {model: 'rgb', value: [255, 77, 229, 1]});
 assert.deepEqual(string.get('rgb(100% 30% 90%)'), {model: 'rgb', value: [255, 77, 229, 1]});
 assert.deepEqual(string.get('transparent'), {model: 'rgb', value: [0, 0, 0, 0]});
@@ -72,6 +80,10 @@ assert.strictEqual(string.get('rgba(10,  3)'), null);
 // With sign
 assert.deepEqual(string.get.rgb('rgb(-244, +233, -100)'), [0, 233, 0, 1]);
 assert.deepEqual(string.get.rgb('rgb(-244 +233 -100)'), [0, 233, 0, 1]);
+assert.deepEqual(string.get.rgb('rgb(-244.5, +233.5, -100.5)'), [0, 233.5, 0, 1]);
+assert.deepEqual(string.get.rgb('rgb(-244.5 +233.5 -100.5)'), [0, 233.5, 0, 1]);
+assert.deepEqual(string.get.rgb('rgb(-2.44E2, +2.33e2, -1.00E2)'), [0, 233, 0, 1]);
+assert.deepEqual(string.get.rgb('rgb(-2.44E2 +2.33e2 -1.00E2)'), [0, 233, 0, 1]);
 assert.deepEqual(string.get.hsl('hsl(+240, 100%, 50.5%)'), [240, 100, 50.5, 1]);
 assert.deepEqual(string.get.hsl('hsl(+240 100% 50.5%)'), [240, 100, 50.5, 1]);
 assert.deepEqual(string.get.rgb('rgba(200, +20, -233, -0.0)'), [200, 20, 0, 0]);