Which colour combination will have more contrast but less harmony?

Correct answer: Red and green

Direct answer: B, red and green. Contrast means a strong difference between colours, while harmony means that colours work together in a smooth and pleasing relationship. Red and green are complementary colours because they lie opposite each other on the traditional colour wheel. Opposite colours create strong visual contrast and can attract immediate attention. They are therefore less harmonious than neighbouring colours unless their intensity is carefully controlled. A, blue and blue-green are neighbouring or closely related colours, so they usually produce a smoother, more harmonious effect and less contrast. B is correct because red and green are complementary and strongly contrasting. C, yellow and yellow-orange, are also close on the colour wheel and generally look harmonious. D, grey and light grey differ mainly in value, but the contrast is usually gentle and neutral rather than strongly colour-contrasting. Memory cue: neighbouring colours usually harmonise; opposite colours usually contrast.