Blue Wall Mural

What happens when light ranging in wavelength between 450 and 495 nanometres meets the human eye? We see the colour blue! Human passion for the colour blue is ages old. Blue was first used with other colours in cave paintings at the end of the last ice age, and since then its use has skyrocketed. In ancient Egypt, the rich azure lapis lazuli stone was used in jewellery and ornaments. During the Renaissance, the same intense blue stone was used to create a gorgeous ultramarine pigment. At the time, it was one of the most expensive and exclusive pigments the wealthy classes could grasp in their fine white silk gloves. The colour blue is relatively rare in nature, and it was difficult to figure out how to extract blue pigment for a long time. The cost of importing lapis lazuli or blue pigment from the East was so extravagantly high for people in the West that they struggled long and hard to create a synthetic pigment for the colour blue. In the beginning of the 1700s, the chemist Johann Jacob Diesbach succeeded in doing the impossible. Finally Westerners had access to the colour without spending a fortune, and blue eventually became one of the world’s most popular colours.

1701 motifs