How hot is a orange star?

Orange stars don't exist, well for the Human Eye we see the sun as Yellow or Orange but actually our Sun is White class G2V.The Surface temperatures of our Sun are around 5505 degrees Celsius, but there are the Brown and Red Dwarfs glowing in Orange Dim light, the Surface temperature of the Red Dwarf is 3210 degrees Celsius or 5800 Fahrenheit.