Question

Which is the complementary color of blue?
A. Red
B. Yellow
C. Green
D. Magenta

Answer 1

Hint:In order to solve this question we need to define complementary colors which states that complementary colors are those colors after mixing these colors white color is formed. Actually after mixing a pair of colors they cancel each other and form a greyscale. They are opposite colors actually after mixing them their waves constructively interfere with each other resulting in white light formation.

Complete answer:
Let us explore the mixing of different colors with blue. After mixing blue and red color violet forms which are secondary colors actually blue and red are two primary colors so their mixing results in formation of secondary color. After mixing blue and yellow white color forms. Actually blue and yellow are complementary colors so they mix constructively and form a white color.

After mixing Blue and Green color, Cyan color forms which have bluish-green color. Cyan is actually one of three primary colors and the complementary color of Cyan is red. Wavelength of cyan is between $490\,nm$ and $520\,nm$. After mixing blue and Magenta color, we form violet color. Actually magenta is pinkish in nature but it too contains blue color. Blue and magenta are CMYK (Cyan, magenta, blue and black) so these colors are not complementary colors.

Hence, the correct option is B.

Note: It should be remembered that Complimentary colors are different from secondary colors. They too form from primary colors (Red, green and blue). Also Complimentary colors have a lot of advantages like they are eye-catching and vibrant in nature. Actually these color wavelengths have less penetration power so it feels safe for our eyes also.