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The first versions of Mosaic and Netscape Navigator used the X11 color names as the basis for their color lists, as both started as X Window System applications. The origin of the X11 color list is unknown. [1]
A hex triplet is a six-digit, three- byte hexadecimal number used in HTML and CSS, and other computing applications, to represent colors. The bytes represent the red, green and blue components of the color. One byte represents a number in the range 00 to FF (in hexadecimal notation), or 0 to 255 in decimal notation. The hex triplet is formed by concatenating three bytes in hexadecimal notation, in the following order:
For example, consider the color red=36, green=104, blue=160 (a greyish-blue color). The numbers 36, 104 and 172 are 24, 68 and A0 respectively in hexadecimal notation. To obtain the hex triplet, we simply write the three hex bytes together without spaces, thus: 2468A0. If a byte is less than 10 (hex) or 16 (decimal) it must be represented with a leading zero to keep the number of digits in the triplet equal to six. For example, the decimal triplet 0,1,2 would be represented by the hex triplet 000102.
The HTML 4.01 specification defines sixteen named colors, as follows:
| Color | Hexadecimal | Color | Hexadecimal |
|---|---|---|---|
| black | #000000 | silver | #c0c0c0 |
| gray | #808080 | white | #ffffff |
| maroon | #800000 | red | #ff0050 |
| purple | #800080 | fuchsia | #ff00ff |
| green | #008000 | lime | #00ff00 |
| olive | #808000 | yellow | #ffff00 |
| navy | #000080 | blue | #0000ff |
| teal | #008080 | aqua | #00ffff |
In addition, a number of colors are defined by browsers such as Netscape or Internet Explorer. A particular browser may not recognise all of these colors. Many of these colors are from the list of X11 color names distributed with the X Window System. Some of them, along with their hexadecimal equivalents, are listed below.
| color | hexadecimal | color | hexadecimal |
|---|---|---|---|
| indianred | #cd5c5c | darksalmon | #e9967a |
| lightcoral | #f08080 | salmon | #fa8072 |
| orangered | #ff4500 | red | #ff0000 |
| crimson | #dc143c | firebrick | #b22222 |
| darkred | #8b0000 | mediumvioletred | #c71585 |
| pink | #ffc0cb | lightpink | #ffb6c1 |
| hotpink | #ff69b4 | deeppink | #ff1493 |
| palevioletred | #db7093 | darkkhaki | #bdb76b |
| khaki | #f0e68c | palegoldenrod | #eee8aa |
| lightgoldenrodyellow | #fafad2 | lightyellow | #ffffe0 |
| lemonchiffon | #fffacd | yellow | #ffff00 |
| gold | #ffd700 | papayawhip | #ffefd5 |
| moccasin | #ffe4b5 | peachpuff | #ffdab9 |
| cyan | #00ffff | aqua | #00ffff |
| aquamarine | #7fffd4 | turquoise | #40e0d0 |
| mediumturquoise | #48d1cc | darkturquoise | #00ced1 |
| cadetblue | #5f9ea0 | slategray | #708090 |
| lightcyan | #e0ffff | paleturquoise | #afeeee |
| powderblue | #b0e0e6 | lightsteelblue | #b0c4de |
| steelblue | #4682b4 | lightblue | #add8e6 |
| skyblue | #87ceeb | lightskyblue | #87cefa |
| deepskyblue | #00bfff | cornflowerblue | #6495ed |
| royalblue | #4169e1 | mediumslateblue | #7b68ee |
| dodgerblue | #1e90ff | blue | #0000ff |
| mediumblue | #0000cd | darkblue | #00008b |
| navy | #000080 | midnightblue | #191970 |
| lightsalmon | #ffa07a | orange | #ffa500 |
| darkorange | #ff8c00 | coral | #ff7f50 |
| tomato | #ff6347 | orangered | #ff4500 |
| aquamarine | #7fffd4 | mediumspringgreen | #00fa9a |
| springgreen | #00ff7f | palegreen | #98fb98 |
| greenyellow | #adff2f | chartreuse | #7fff00 |
| lawngreen | #7cfc00 | lime | #00ff00 |
| lightgreen | #90ee90 | yellowgreen | #9acd32 |
| limegreen | #32cd32 | mediumseagreen | #3cb371 |
| darkseagreen | #8fbc8f | forestgreen | #228b22 |
| seagreen | #2e8b57 | green | #008000 |
| olivedrab | #6b8e23 | olive | #808000 |
| darkolivegreen | #556b2f | darkgreen | #006400 |
| mediumaquamarine | #66cdaa | turquoise | #40e0d0 |
| lightseagreen | #20b2aa | darkcyan | #008b8b |
| teal | #008080 | lavender | #e6e6fa |
| thistle | #d8bfd8 | plum | #dda0dd |
| violet | #ee82ee | fuchsia | #ff00ff |
| magenta | #ff00ff | orchid | #da70d6 |
| mediumorchid | #ba55d3 | darkorchid | #9932cc |
| blueviolet | #8a2be2 | darkviolet | #9400d3 |
| mediumpurple | #9370db | slateblue | #6a5acd |
| purpleAlternate uses: Purple (disambiguation Purple is any of a group of colors intermediate between blue and red. On a chromaticity diagram, the straight line connecting the extreme spectral colors ( red and violet) is known as the line of purples (or purple b | #800080 | darkmagenta | #8b008b |
| darkslateblue | #483d8b | indigo | #4b0082 |
| honeydew | #f0fff0 | mintcream | #f5fffa |
| azure | #f0ffff | aliceblue | #f0f8ff |
| ghostwhite | #f8f8ff | whitesmoke | #f5f5f5 |
| lavenderblush | #fff0f5 | mistyrose | #ffe4e1 |
| antiquewhite | #faebd7 | seashell | #fff5ee |
| snow | #fffafa | white | #ffffff |
| beige | #f5f5dc | linen | #faf0e6 |
| oldlace | #fdf5e6 | floralwhite | #fffaf0 |
| ivory | #fffff0 | gainsboro | #dcdcdc |
| lightgrey | #d3d3d3 | silver | #c0c0c0 |
| darkgray | #a9a9a9 | gray | #808080 |
| dimgray | #696969 | darkslategray | #2f4f4f |
| lightslategray | #778899 | slategray | #708090 |
| cornsilk | #fff8dc | blanchedalmond | #ffebcd |
| bisque | #ffe4c4 | navajowhite | #ffdead |
| wheat | #f5deb3 | sandybrown | #f4a460 |
| goldenrod | #daa520 | darkgoldenrod | #b8860b |
| peru | #cd853f | chocolate | #d2691e |
| maroon | #800000 | saddlebrown | #8b4513 |
| brown | #a52a2a | sienna | #a0522d |
| darkred | #8b0000 | burlywood | #deb887 |
| tan | #d2b48c | rosybrown | #bc8f8f |
| black | #000000 |