Which primary color is the darkest?

• A. Red
• B. Blue
• C. Yellow
• D. Green

Answer: (B)

In color perception, brightness isn’t just about hue; it also depends on how our eyes respond to light. Among the traditional primary colors used in art—red, blue, and yellow—blue often reads as the darkest. Our visual system is less sensitive to blue light than to green or red light, so a blue color tends to look deeper or more muted under the same lighting. Additionally, many blue pigments absorb more light, reinforcing that deeper appearance. So, blue is the darkest of these primaries, while yellow appears the brightest and red sits in between.