Color blindness, or color deficiency, causes difficulty telling different colors apart and may affect the shades and brightness of colors. Color deficiency can occur in females but is much less common ...

Colors are an effective medium for communicating meaning. Some have certain implicit psychological associations. Red, for example, is often associated with power, love, and anger. Blue might convey ...

The rarity and phylogenetically scattered nature of colour polymorphism is apparent in the remaining birds. For instance, 23% of all known colour-polymorphic species are within the Passeriformes, yet ...

Sto distribution centre in Hamburg, Germany. Designed by Michael Wilford & Associates, 1994-1995. Photographed by Richard Bryant, image courtesy of Sto Working with color is, above all, challenging.