Final answer:
The color turquoise is not used in the resistor value color code. Standard colors like black, white, and violet represent specific digits in determining the resistance value and tolerance.
Step-by-step explanation:
The color turquoise is NOT used in the resistor value color code. The other options given - black, white, and violet - are used in the standard color-coding scheme. Resistor color codes are used to indicate the resistance value, tolerance, and sometimes the temperature coefficient on resistors using bands of different colors. Each color corresponds to a certain number: black (0), brown (1), red (2), orange (3), yellow (4), green (5), blue (6), violet (7), gray (8), and white (9). Additionally, gold and silver are used for tolerance, and none of the standard color codes includes turquoise.