16personalities

A website that offers personality tests based on the Myers-Briggs Type Indicator model.

They have color-coded designs for every personality type, which are then often used as bases for character creation by artists.
If a character based on an MBTI type doesn't take cues or inspiration from these designs, original would be better suited.

Analysts (purple)

• Architect (INTJ)
• Logician (INTP)
• Commander (ENTJ)
• Debater (ENTP)

Diplomats (green)

• Advocate (INFJ)
• Mediator (INFP)
• Protagonist (ENFJ)
• Campaigner (ENFP)

Sentinels (blue)

• Logistician (ISTJ)
• Defender (ISFJ)
• Executive (ESTJ)
• Consul (ESFJ)

Explorers (yellow)

• Virtuoso (ISTP)
• Adventurer (ISFP)
• Entrepeneur (ESTP)
• Entertainer (ESFP)