diff --git a/sql/sql.go b/sql/sql.go
index efbaab06..1fc2d637 100644
--- a/sql/sql.go
+++ b/sql/sql.go
@@ -34,12 +34,11 @@ const (
 var (
 	allowedTypes = []string{
 		"array", "boolean", "circle",
-		"color", "datetime", "domain",
-		"double", "email", "latitude",
-		"longitude", "number", "object",
-		"password", "phone", "point",
-		"polygon", "record", "string",
-		"url", "uuid",
+		"datetime", "domain", "double",
+		"email", "latitude", "longitude",
+		"number", "object", "password",
+		"phone", "point", "polygon",
+		"record", "string", "uuid",
 	}
 
 	allowedAlgorithms = []string{
diff --git a/sql/sql_test.go b/sql/sql_test.go
index 62152472..1b7b187b 100644
--- a/sql/sql_test.go
+++ b/sql/sql_test.go
@@ -2694,20 +2694,11 @@ func Test_Parse_Queries_Define(t *testing.T) {
 		},
 		{
 			sql: `DEFINE FIELD temp ON person TYPE`,
-			err: "Found `` but expected `array, boolean, circle, color, datetime, domain, double, email, latitude, longitude, number, object, password, phone, point, polygon, record, string, url, uuid`",
+			err: "Found `` but expected `array, boolean, circle, datetime, domain, double, email, latitude, longitude, number, object, password, phone, point, polygon, record, string, uuid`",
 		},
 		{
 			sql: `DEFINE FIELD temp ON person TYPE something`,
-			err: "Found `something` but expected `array, boolean, circle, color, datetime, domain, double, email, latitude, longitude, number, object, password, phone, point, polygon, record, string, url, uuid`",
-		},
-		{
-			sql: `DEFINE FIELD temp ON person TYPE url`,
-			res: &Query{Statements: []Statement{&DefineFieldStatement{
-				KV: "*", NS: "*", DB: "*",
-				Name: &Ident{"temp"},
-				What: Tables{&Table{"person"}},
-				Type: "url",
-			}}},
+			err: "Found `something` but expected `array, boolean, circle, datetime, domain, double, email, latitude, longitude, number, object, password, phone, point, polygon, record, string, uuid`",
 		},
 		{
 			sql: `DEFINE FIELD temp ON person TYPE email`,
diff --git a/util/conv/conv.go b/util/conv/conv.go
index a737f5fa..9c22c232 100644
--- a/util/conv/conv.go
+++ b/util/conv/conv.go
@@ -87,12 +87,8 @@ func ConvertTo(t, k string, obj interface{}) (val interface{}, err error) {
 	switch t {
 	default:
 		return obj, nil
-	case "url":
-		return ConvertToUrl(obj)
 	case "uuid":
 		return ConvertToUuid(obj)
-	case "color":
-		return ConvertToColor(obj)
 	case "email":
 		return ConvertToEmail(obj)
 	case "phone":
@@ -124,14 +120,6 @@ func ConvertTo(t, k string, obj interface{}) (val interface{}, err error) {
 	}
 }
 
-func ConvertToUrl(obj interface{}) (val string, err error) {
-	val = fmt.Sprintf("%v", obj)
-	if !govalidator.IsURL(val) {
-		err = fmt.Errorf("Expected a URL, but found '%v'", obj)
-	}
-	return
-}
-
 func ConvertToUuid(obj interface{}) (val string, err error) {
 	val = fmt.Sprintf("%v", obj)
 	if !govalidator.IsUUID(val) {
@@ -156,14 +144,6 @@ func ConvertToPhone(obj interface{}) (val string, err error) {
 	return
 }
 
-func ConvertToColor(obj interface{}) (val string, err error) {
-	val = fmt.Sprintf("%v", obj)
-	if !govalidator.IsHexcolor(val) && !govalidator.IsRGBcolor(val) {
-		err = fmt.Errorf("Expected a HEX or RGB color, but found '%v'", obj)
-	}
-	return
-}
-
 func ConvertToArray(obj interface{}) (val []interface{}, err error) {
 	if now, ok := obj.([]interface{}); ok {
 		val = now