KT 32.023 Light blue
A vibrant hint of ultramarine blue, architecture’s optical brightener.
Referenz - Le Corbusier, Salubra wallpaper, 1931
Farbfunktion - materialization
Wirksamkeit - best in the shadows
The interaction between ultramarine blue and electromagnetic energy accounts for its remarkable ability to make dark surfaces look lighter. The pigment molecules absorb invisible ultraviolet light, convert it to visible blue light, and project it into the space. This ability, which is unique to ultramarine and lapis lazuli pigments, explains why other pigments cannot be substituted for them. Even small amounts of ultramarine blue suffice for the effect to become apparent, allowing colors such as this light blue to exhibit a sustaining beauty in the shadows.
Katrin Trautwein, 225 Farben, 2017 ©Birkhäuser Verlag GmbH, Basel
"Their colors are just unbelievably beautiful, whether the sun is shining, or it's rainy weather, or night, with every play of light they look different again. Incredible."