If science gives you a raging hadron, this is what it looks like! In particle physics, a hadron is a composite particle made of quarks held together by the strong force. This particular hadron is a baryon (because it has three quarks), specifically a neutron (because it has one up quark and two down quarks). A quark's color charge can be red, green, or blue. Hadrons have a sum color charge of zero because the various color charges cancel each other out.