RED
Has the longest wavelength, making it often appear nearer than it is which grabs people’s attention. It’s the same color as blood which is why it’s associated with anger and aggression. This color can feel overwhelming when overused. It’s a color with high visibility which is why it’s used to alert danger. Red is known to successfully trigger impulse buys and stimulate appetite, making it a common color for shopping and fast food. Red was one of the first colors to be named, the word derives from Sanskrit rudhira.

ORANGE
Is a bright optimistic color thought to enhance creativity. Orange has high visibility and is often used for warning signs, traffic signals, and prison jumpsuits. It’s a color that exemplifies friendliness and humor so it’s often used for children's products. Bet you didn’t know there is actually a word that rhymes with orange… it’s “Blorenge” which is a large hill in Wales.

YELLOW
Is a bright color that is often seen as the color of happiness and cheerfulness. It’s an energizing color often associated with the sun. It’s also considered a humbling color that signifies affordability and is used in children's packaging. In 1939, 50 different shades of yellow were proposed and narrowed down to the current color called National School Bus Glossy Yellow.

GREEN
Is the most common color and is found in abundance outdoors, because of that it’s a color that naturally soothes people. Green reminds us of nature and has the power to help people adjust, so it’s commonly used in lobbies, offices, and restaurants. In 1775 the color Schele’s Green was invented. This vivid green was the most popular fashionable color at the time, found in clothes, curtains and toys until it’s consumers became seriously ill. Schele’s Green or Paris Green was made with one of the deadliest elements, copper arsenite also known as arsenic.

BLUE
Has the shortest wavelength and is the most universally appealing color of the spectrum and the majority of people's favorite color. This cold color is known to be an appetite suppressant and is related to lowering blood pressure. Associated with intellect and trust, it is often used to color banks. Blue is the rarest color found in nature. Animals that appear blue aren’t actually blue, they are a deep shade of purple or anthocyanin compound. Light hits special structures on the cell which causes wavelengths to bounce in a way that looks blue to us.

PURPLE
Is a mix of both red and blue wavelengths overlapping. This color is not commonly found in nature so it has a more mysterious association and is linked to spirituality, imagination and wisdom. The color purple was an expensive pigment to make so it is most often associated with royalty and religion. Tyrian purple was once the most expensive color to produce. During Roman times, it took 4 million crushed mollusk shells to create one pound of purple pigment.