two-color system
61Postage stamp color — The colors of postage stamps are at once obvious, and among the most difficult areas of philately. Different denominations of stamps have been printed in different colors since the very beginning; as with their successors, postal clerks could… …
62University of Houston System — Infobox University name =University of Houston System image size = 170px native name = latin name = motto = In Tempore (Latin) established =1977 type =State university system endowment = $522 million [cite web | url =… …
63Spot color — In offset printing, a spot color is any color generated by an ink (pure or mixed) that is printed using a single run . The widely spread offset printing process is composed of four spot colors: Cyan, Magenta, Yellow and Key (black) commonly… …
64High Capacity Color Barcode — An example of a High Capacity Color Barcode: a Microsoft Tag referring to the HCCB article on the English Wikipedia High Capacity Color Barcode (HCCB) is the name coined by Microsoft for its technology of encoding data in a 2D barcode using… …
65RG color space — The RG or red green color space is a color space that uses only two colors, red and green. It is an additive format, similar to the RGB color model but without a blue channel. Thus, blue is said to be out of gamut. This format is not in use today …
66Lightness (color) — Three hues in the Munsell color model. Each color differs in value from top to bottom in equal perception steps. The right column undergoes a dramatic change in perceived color. Lightness (sometimes called value or tone) is a property of a color …
67Lavender (color) — infobox color| title= Lavender (web color) pic= hex= E6E6FA r=230|g=230|b=250 c= 8|m= 8|y= 0|k=2 h=240|s= 8|v= 98 [ [http://web.forret.com/tools/color.asp?RGB=%236600FF web.forrett.com Color Conversion Tool set to hex code #E6E6FA (Lavender (web… …
68RYB color model — RYB (an abbreviation of red yellow blue) is a historical set of subtractive primary colors. It is primarily used in art and design education, particularly painting. It predates modern scientific color theory.Color WheelRYB make up the primary… …
69CIELUV color space — In colorimetry, the CIE 1976 ( L* , u* , v* ) color space, also known as the CIELUV color space, is a color space adopted by the International Commission on Illumination (CIE) in 1976, as a simple to compute transformation of the 1931 CIE XYZ… …
70Secondary color — A secondary color is a color made by mixing two primary colors in a given color space. Examples include the following:Light (RGB) red(●) + green (●) = yellow(●)green(●) + blue(●) …
