This type of scheme combines the three equidistant colours, which occur at the points of an equilateral triangle placed anywhere on the colour circle:

Correct option is B

A Triadic colour scheme consists of three colours that are evenly spaced around the colour wheel, forming an equilateral triangle. This scheme offers strong visual contrast while maintaining colour harmony, making it vibrant and balanced. Common examples include the primary colours (red, blue, yellow) or secondary colours (orange, green, purple).
Information Booster: The triadic scheme is popular in art, design, and interior decoration because it balances variety and harmony. While it offers more contrast than analogous schemes, it is less contrasting than complementary ones. Designers often use one dominant colour and the other two as accents to maintain visual balance. A well-executed triadic colour scheme helps in creating dynamic and aesthetically appealing compositions without overwhelming the viewer.
Additional Knowledge:
· (a) Monochromatic colour scheme: Involves variations in lightness and saturation of a single hue, offering minimal contrast but high cohesion. It does not involve multiple hues, hence not related to equidistant points on the colour wheel.
· (c) Double complementary scheme: Combines two pairs of complementary colours (four hues total), offering rich contrast but more complex harmony than a triadic scheme.
· (d) Analogous colour scheme: Uses colours that are next to each other on the colour wheel, providing harmonious and serene effects but not spaced in a triangle formation.