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Complementary colours are...

Complementary colours are

A

Red and blue

B

Orange and blue

C

Green and blue

D

Yellow and orange.

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The correct Answer is:
To determine which pairs of colors are complementary colors, we can follow these steps: ### Step-by-Step Solution: 1. **Understand Primary Colors**: Recognize that the primary colors of light are red, blue, and green. These colors are fundamental and cannot be created by mixing other colors. 2. **Identify Complementary Colors**: Complementary colors are pairs of colors that, when combined, cancel each other out. This means they produce a grayscale color (white or black) when mixed. In the RGB color model, complementary colors are opposite each other on the color wheel. 3. **Analyze the Options**: The options provided are: - (A) Red and Blue - (B) Orange and Blue - (C) Green and Blue - (D) Yellow and Orange 4. **Determine Complementary Pairs**: - **Red and Blue**: These are both primary colors and do not form a complementary pair. - **Orange and Blue**: Orange is a secondary color (made from red and yellow), and blue is a primary color. They are complementary. - **Green and Blue**: Green is a primary color, and blue is also a primary color; they are not complementary. - **Yellow and Orange**: Yellow is a primary color, and orange is a secondary color. They are not complementary. 5. **Conclusion**: The only complementary color pair from the options is **Orange and Blue**. Thus, the correct answer is option (B). ### Final Answer: **Complementary colors are Orange and Blue (Option B).** ---
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