Step 1: Understanding Warm and Cool Colours.
Colours are classified into two broad categories: warm and cool. Warm colours are those that evoke feelings of warmth, energy, and passion. They include reds, oranges, and yellows. These colours are associated with heat, fire, and sunlight.
Step 2: Identifying the Warm Colour.
Among the options provided, red is the colour that is considered warm. It is often used to represent warmth, energy, and action, making it a quintessential warm colour.
Step 3: Verifying the Other Options.
- Blue is a cool colour, commonly associated with calmness and water.
- Green is considered a neutral colour, though it can lean towards warm in certain contexts, like when mixed with yellow.
- White is a neutral colour, which does not fall into the warm or cool category.
Conclusion:
Therefore, the correct answer is (3) Red, as it is a warm colour.