R provide the function as.hexmode() to convert decimal numbers into hex numbers and the rgb() function to convert RGB triplets into hex triplets. If a number is less than 16 (in decimal notation) or 10 (in hex notation), it must be represented with a leading zero to keep the number of digits in the triplet equal to six. The decimal RGB color code is rgb(37,5,0). The 255 RGB color code is composed of a hexadecimal 25 red (37/256), a 5 green (5/256) and a blue component (0/256). To obtain the hex triplet, we simply concatenate the hash symbol and the three hex bytes together: #2468A0. 255 255 255 255 255 37 5 0 255 RGB Color Code. The decimal numbers 36, 104 and 160 are defined in hexadecimal notation as 24, 68 and A0 respectively. Hexadecimal notation is a number scheme with a base of 16 (or hex) and the primary numbers 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F.įor example, a color with the RGB values red=36, green=104, blue=160 is a greyish-blue color. Hexadecimal colors represent a more efficient way (for machines) to represent the three RGB colors. Given that the three RGB components having 256 possible values, then there are 256*256*256 possible colors, or a total of 16,777,216 colors. Each of the RGB color components ranges from 0 to 255.
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