Referring to anyone with pale yellow to light-brown hair, lighter eyes, and usually lighter skin complexion. Feminine is "Blonde".
Jesse is very fair complected, he is a blond.
Refering to a woman with dark brown or black hair, darker eyes, and usually dark complexion. Some people commonly label everyone with any shade of brown hair as "brunette", even though lighter shades of brown hair are anthropogically considered "blond(e)".
Many Spanish women are brunettes. Sarah is a brunette, she has dark hair.