Black is the color of objects that do not emit or reflect light in any part of the visible spectrum; they absorb all such frequencies of light. Black is the darkest possible color. While this platonic ideal black is never found with actual pigments or other coloring, sufficiently dark items are generally referred to as "black".
White is a color, the perception of which is evoked by light that stimulates all three types of color sensitive cone cells in the human eye in equal amounts and with high brightness compared to the surroundings. A white visual stimulation will be void of hue and grayness. White is the lightest possible color.
Prior to standardization as a web color, Gainsboro was included as one of the X11 color names. It was, however, absent from the original 1987 version of the list, but present in Paul Raveling's version which added, amongst other things, "light and off-white colors, copied from several Sinclair Paints color samples".
The color medium gray, or gray in the X11 color names, which is lighter than the HTML/CSS gray. The coordinates in the X11 were set at 190 to avoid gray being displayed as white on 2-bit grayscale displays.
Spanish gray is the color that is called gris (gray in Spanish) in the Guía de coloraciones (Guide to colorations) by Rosa Gallego and Juan Carlos Sanz, a color dictionary published in 2005 that is widely popular in the Hispanophone realm.
Cool gray, is a medium light color gray mixed with the color blue.
This color is identical with color sample No. 203 (identified as gray blue) at the following website: http://tx4.us/nbs/nbs-g.htm —The ISCC-NBS Dictionary of Colo(u)r Names (1955), a website for stamp collectors to evaluate the colors of their stamps.
Poet George Sterling once wrote a poem calling San Francisco the "cool grey city of love". The phrase cool grey as applied to San Francisco refers to the frequent fogs from the Pacific Ocean that envelop the city.
Cadet gray is a slightly bluish shade of gray. The first recorded use of cadet grey as a color name in English was in 1912.
Before 1912, the word cadet gray was used as a name for a type of military issue uniforms. Most famously, it was the color of the uniforms of the Confederate Army. In 1815, it had earlier become the color of the uniforms of the United States Military Academy (West Point).
Glaucous (from the Latin glaucus, meaning "bluish-gray", from the Greek glaukos) is used to describe the pale gray or blue appearance of the surfaces of some plants, as well as in the names of birds, such as the glaucous gull (Larus hyperboreus), glaucous-winged gull (Larus glaucescens), glaucous macaw (Anodorhynchus glaucus), and glaucous tanager (Thraupis glaucocolpa).
The color displayed at right matches the color sample called taupe referenced below in the 1930 book A Dictionary of Color, the world standard for color terms before the invention of computers. However, the word taupe may often be used to refer to lighter shades of taupe today, and therefore another name for this color is dark taupe.
The first use of taupe as a color name in English was in the early 19th century.