Take a colour hex and return a base64 image string in gif format

hex64

hex64: function(hex) {
	function encodeHex(s) {
		s = s.substring(1, 7);
		if (s.length < 6) {
			s = s[0] + s[0] + s[1] + s[1] + s[2] + s[2];
		}
		return encodeRGB(
			parseInt(s[0] + s[1], 16), parseInt(s[2] + s[3], 16), parseInt(s[4] + s[5], 16));
	}

	function encodeRGB(r, g, b) {
		return encode_triplet(0, r, g) + encode_triplet(b, 255, 255);
	}

	function encode_triplet(e1, e2, e3) {
		var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
		enc1 = e1 >> 2;
		enc2 = ((e1 & 3) << 4) | (e2 >> 4);
		enc3 = ((e2 & 15) << 2) | (e3 >> 6);
		enc4 = e3 & 63;
		return keyStr.charAt(enc1) + keyStr.charAt(enc2) + keyStr.charAt(enc3) + keyStr.charAt(enc4);
	}

	function generatePixel(color) {
		return "data:image/gif;base64,R0lGODlhAQABAPAA" + color + "/yH5BAAAAAAALAAAAAABAAEAAAICRAEAOw==";
	}

	var color = encodeHex(hex);
	var data = generatePixel(color);
	return data;
}

hex64("#00a8f3");