The word ‘chakra’ is an ancient Sanskrit word,  means ‘wheel’.

The 7 chakras are

root/base chakra (Muladhara) red

sacral chakra (Svadisthana) orange

 solar plexus chakra (Manipura) yellow

 heart chakra (Anahata) green

 throat chakra (Vissudha) blue

 third eye chakra (Ajna) indigo

crown chakra (Sahasrara) purple