#F F 0 is the same as: #FF FF 00 and is YELLOW. #0 0 F is the same as: #00 00 FF and is BLUE. This is a shortcut for colors where the red, green, and blue values consist of two identical digits. HTML also recognizes color numbers that contain just three hexidecimal digits. Note that is is OK to use either uppercase or lowercase letters for the base-16 digits A, B, C, D, E, F. #55 6B 2F has lower values for all colors, giving a darker result: DARKOLIVEGREEN. (no, I don't know who thought up the color names.) #FF EF D5 has high values for all colors, giving a light result: PAPAYAWHIP. #FF FF FF means full FF amounts of Red, Green, and Blue. #FF FF 00 means FF worth of Red and Green, and Blue. #00 00 FF means no Red or Green, and FF worth of Blue. #FF 00 00 means FF worth of Red, and no Green or Blue. This gives over 16 million possible colors. Each two digit hex pair can have a value from 00 to FF (FF=256 in base 10). The six digit color number is broken into three groups of two digits which specify the amount of Red, Green, and Blue in the color (using additive color.the way colored lights mix, not the way color pigments mix). a color number, such as "#FF0000", "#FFFFFF" (those are red and white).Ĭolor numbers are specified using hexadecimal (base 16) values.HTML used to recognize 16 color names ("black", "white", "gray", "silver", "maroon", "red", "purple", "fushsia", "green", "lime", "olive", "yellow", "navy", "blue", "teal", and "aqua"), but new browsers can recognize 147 CSS3 color names.
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