# Your Go-To Regular Expression Reference: Hexadecimals

**\\x00** matches the `NULL` character, char code 0.

**\\x01** matches `SOH (start of heading)`, char code 1.

**\\x02** matches `STX (start of text)`, char code 2.

**\\x03** matches `ETX (end of text)`, char code 3.

**\\x04** matches `EOT (end of transmit)`, char code 4.

**\\x05** matches `ENQ (enquiry)`, char code 5.

**\\x06** matches `ACK (acknowledge)`, char code 6.

**\\x07** matches `BELL (bell)`, char code 7.

**\\x08** matches `BS (backspace)`, char code 8.

**\\x09** matches `TAB (horizontal tab)`, char code 9.

**\\x0a** matches `LINE FEED (line feed)`, char code 10.

**\\x0b** matches `VERTICAL TAB (vertical tab)`, char code 11.

**\\x0c** matches `FORM FEED (form feed)`, char code 12.

**\\x0d** matches `CARRIAGE RETURN (carriage return)`, char code 13.

**\\x0e** matches `SO (shift out)`, char code 14.

**\\x0f** matches `SI (shift in)`, char code 15.

**\\x10** matches `DLE (data line escape)`, char code 16.

**\\x11** matches `DC1 (device control 1)`, char code 17.

**\\x12** matches `DC2 (device control 2)`, char code 18.

**\\x13** matches `DC3 (device control 3)`, char code 19.

**\\x14** matches `DC4 (device control 4)`, char code 20.

**\\x15** matches `NAK (negative acknowledge)`, char code 21.

**\\x16** matches `SYN (synchronous idle)`, char code 22.

**\\x17** matches `ETB (end of transmit block)`, char code 23.

**\\x18** matches `CAN (cancel)`, char code 24.

**\\x19** matches `EM (end of medium)`, char code 25.

**\\x1a** matches `SUB (substitute)`, char code 26.

**\\x1b** matches `ESC (escape)`, char code 27.

**\\x1c** matches `FS (file separator)`, char code 28.

**\\x1d** matches `GS (group separator)`, char code 29.

**\\x1e** matches `RS (record separator)`, char code 30.

**\\x1f** matches `US (unit separator)`, char code 31.

**\\x20** matches `SPACE character`, char code 32.

**\\x21** matches `!`, char code 33.

**\\x22** matches `"`, char code 34.

**\\x23** matches `#`, char code 35.

**\\x24** matches `$`, char code 36.

**\\x25** matches `%`, char code 37.

**\\x26** matches `&`, char code 38.

**\\x27** matches `'`, char code 39.

**\\x28** matches `(`, char code 40.

**\\x29** matches `)`, char code 41.

**\\x2a** matches `*`, char code 42.

**\\x2b** matches `+`, char code 43.

**\\x2c** matches \`\`,\`, char code 44.

**\\x2d** matches `-`, char code 45.

**\\x2e** matches `.`, char code 46.

**\\x2f** matches `/`, char code 47.

**\\x30** matches `0`, char code 48.

**\\x31** matches `1`, char code 49.

**\\x32** matches `2`, char code 50.

**\\x33** matches `3`, char code 51.

**\\x34** matches `4`, char code 52.

**\\x35** matches `5`, char code 53.

**\\x36** matches `6`, char code 54.

**\\x37** matches `7`, char code 55.

**\\x38** matches `8`, char code 56.

**\\x39** matches `9`, char code 57.

**\\x3a** matches `:`, char code 58.

**\\x3b** matches `;`, char code 59.

**\\x3c** matches `<`, char code 60.

**\\x3d** matches `=`, char code 61.

**\\x3e** matches `>`, char code 62.

**\\x3f** matches `?`, char code 63.

**\\x40** matches `@`, char code 64.

**\\x41** matches `A`, char code 65.

**\\x42** matches `B`, char code 66.

**\\x43** matches `C`, char code 67.

**\\x44** matches `D`, char code 68.

**\\x45** matches `E`, char code 69.

**\\x46** matches `F`, char code 70.

**\\x47** matches `G`, char code 71.

**\\x48** matches `H`, char code 72.

**\\x49** matches `I`, char code 73.

**\\x4a** matches `J`, char code 74.

**\\x4b** matches `K`, char code 75.

**\\x4c** matches `L`, char code 76.

**\\x4d** matches `M`, char code 77.

**\\x4e** matches `N`, char code 78.

**\\x4f** matches `O`, char code 79.

**\\x50** matches `P`, char code 80.

**\\x51** matches `Q`, char code 81.

**\\x52** matches `R`, char code 82.

**\\x53** matches `S`, char code 83.

**\\x54** matches `T`, char code 84.

**\\x55** matches `U`, char code 85.

**\\x56** matches `V`, char code 86.

**\\x57** matches `W`, char code 87.

**\\x58** matches `X`, char code 88.

**\\x59** matches `Y`, char code 89.

**\\x5a** matches `Z`, char code 90.

**\\x5b** matches `[`, char code 91.

**\\x5c** matches `\`, char code 92.

**\\x5d** matches `]`, char code 93.

**\\x5e** matches `^`, char code 94.

**\\x5f** matches `_`, char code 95.

**\\x60** matches \`\`\`, char code 96.

**\\x61** matches `a`, char code 97.

**\\x62** matches `b`, char code 98.

**\\x63** matches `c`, char code 99.

**\\x64** matches `d`, char code 100.

**\\x65** matches `e`, char code 101.

**\\x66** matches `f`, char code 102.

**\\x67** matches `g`, char code 103.

**\\x68** matches `h`, char code 104.

**\\x69** matches `i`, char code 105.

**\\x6a** matches `j`, char code 106.

**\\x6b** matches `k`, char code 107.

**\\x6c** matches `l`, char code 108.

**\\x6d** matches `m`, char code 109.

**\\x6e** matches `n`, char code 110.

**\\x6f** matches `o`, char code 111.

**\\x70** matches `p`, char code 112.

**\\x71** matches `q`, char code 113.

**\\x72** matches `r`, char code 114.

**\\x73** matches `s`, char code 115.

**\\x74** matches `t`, char code 116.

**\\x75** matches `u`, char code 117.

**\\x76** matches `v`, char code 118.

**\\x77** matches `w`, char code 119.

**\\x78** matches `x`, char code 120.

**\\x79** matches `y`, char code 121.

**\\x7a** matches `z`, char code 122.

**\\x7b** matches `{`, char code 123.

**\\x7c** matches `|`, char code 124.

**\\x7d** matches `}`, char code 125.

**\\x7e** matches `~`, char code 126.

**\\x7f** matches `DEL (delete)`, char code 127.

**\\x80** matches `€`, char code 128.

**\\x81** (char code 129) seems to be unused.

**\\x82** matches `BREAK PERMITTED HERE`, char code 130.

**\\x83** matches `NO BREAK HERE`, char code 131.

**\\x84** (char code 132) seems to be unused.

**\\x85** matches `NEL (next line)`, char code 133.

**\\x86** matches `START OF SELECTED AREA`, char code 134.

**\\x87** matches `END OF SELECTED AREA`, char code 135.

**\\x88** matches `CHARACTER TABULATION SET`, char code 136.

**\\x89** matches `CHARACTER TABULATION SET WITH JUSTIFICATION`, char code 137.

**\\x8a** matches `LINE TABULATION SET`, char code 138.

**\\x8b** matches `PARTIAL LINE FORWARD`, char code 139.

**\\x8c** matches `PARTIAL LINE BACKWARD`, char code 140.

**\\x8d** matches `REVERSE LINE FEED`, char code 141.

**\\x8e** matches `SINGLE SHIFT TWO`, char code 142.

**\\x8f** matches `SINGLE SHIFT THREE`, char code 143.

**\\x90** matches `DEVICE CONTROL STRING`, char code 144.

**\\x91** matches `PRIVATE USE ONE`, char code 145.

**\\x92** matches `PRIVATE USE TWO`, char code 146.

**\\x93** matches `SET TRANSMIT STATE`, char code 147.

**\\x94** matches `CANCEL CHARACTER`, char code 148.

**\\x95** matches `MESSAGE WAITING`, char code 149.

**\\x96** matches `START OF GUARDED AREA`, char code 150.

**\\x97** matches `END OF GUARDED AREA`, char code 151.

**\\x98** matches `START OF STRING`, char code 152.

**\\x99** (char code 153), seems to not be assigned.

**\\x9a** matches `SINGLE CHARACTER INTRODUCER`, char code 154.

**\\x9b** matches `CONTROL SEQUENCE INTRODUCER`, char code 155.

**\\x9c** matches `STRING TERMINATOR`, char code 156.

**\\x9d** matches `OPERATING SYSTEM COMMAND`, char code 157.

**\\x9e** matches `PRIVACY MESSAGE`, char code 158.

**\\x9f** matches `APPLICATION PROGRAM COMMAND`, char code 159.

**\\xa0** matches `a non-breaking space`, char code 160. (Like `&nbsp` in html)

**\\xa1** matches `¡`, char code 161.

**\\xa2** matches `¢`, char code 162.

**\\xa3** matches `£`, char code 163.

**\\xa4** matches `¤`, char code 164.

**\\xa5** matches `¥`, char code 165.

**\\xa6** matches `¦`, char code 166.

**\\xa7** matches `§`, char code 167.

**\\xa8** matches `¨`, char code 168.

**\\xa9** matches `©`, char code 169.

**\\xaa** matches `ª`, char code 170.

**\\xab** matches `«`, char code 171.

**\\xac** matches `¬`, char code 172.

**\\xad** matches `a SOFT HYPHEN`, an invisible format character indicating a possible hyphenation location\`, char code 173.

**\\xae** matches `®`, char code 174.

**\\xaf** matches `¯`, char code 175.

**\\xb0** matches `°`, char code 176.

**\\xb1** matches `±`, char code 177.

**\\xb2** matches `²`, char code 178.

**\\xb3** matches `³`, char code 179.

**\\xb4** matches `´`, char code 180.

**\\xb5** matches `µ`, char code 181.

**\\xb6** matches `¶`, char code 182.

**\\xb7** matches `·`, char code 183.

**\\xb8** matches `¸`, char code 184.

**\\xb9** matches `¹`, char code 185.

**\\xba** matches `º`, char code 186.

**\\xbb** matches `»`, char code 187.

**\\xbc** matches `¼`, char code 188.

**\\xbd** matches `½`, char code 189.

**\\xbe** matches `¾`, char code 190.

**\\xbf** matches `¿`, char code 191.

**\\xc0** matches `À`, char code 192.

**\\xc1** matches `Á`, char code 193.

**\\xc2** matches `Â`, char code 194.

**\\xc3** matches `Ã`, char code 195.

**\\xc4** matches `Ä`, char code 196.

**\\xc5** matches `Å`, char code 197.

**\\xc6** matches `Æ`, char code 198.

**\\xc7** matches `Ç`, char code 199.

**\\xc8** matches `È`, char code 200.

**\\xc9** matches `É`, char code 201.

**\\xca** matches `Ê`, char code 202.

**\\xcb** matches `Ë`, char code 203.

**\\xcc** matches `Ì`, char code 204.

**\\xcd** matches `Í`, char code 205.

**\\xce** matches `Î`, char code 206.

**\\xcf** matches `Ï`, char code 207.

**\\xd0** matches `Ð`, char code 208.

**\\xd1** matches `Ñ`, char code 209.

**\\xd2** matches `Ò`, char code 210.

**\\xd3** matches `Ó`, char code 211.

**\\xd4** matches `Ô`, char code 212.

**\\xd5** matches `Õ`, char code 213.

**\\xd6** matches `Ö`, char code 214.

**\\xd7** matches `×`, char code 215.

**\\xd8** matches `Ø`, char code 216.

**\\xd9** matches `Ù`, char code 217.

**\\xda** matches `Ú`, char code 218.

**\\xdb** matches `Û`, char code 219.

**\\xdc** matches `Ü`, char code 220.

**\\xdd** matches `Ý`, char code 221.

**\\xde** matches `Þ`, char code 222.

**\\xdf** matches `ß`, char code 223.

**\\xe0** matches `à`, char code 224.

**\\xe1** matches `á`, char code 225.

**\\xe2** matches `â`, char code 226.

**\\xe3** matches `ã`, char code 227.

**\\xe4** matches `ä`, char code 228.

**\\xe5** matches `å`, char code 229.

**\\xe6** matches `æ`, char code 230.

**\\xe7** matches `ç`, char code 231.

**\\xe8** matches `è`, char code 232.

**\\xe9** matches `é`, char code 233.

**\\xea** matches `ê`, char code 234.

**\\xeb** matches `ë`, char code 235.

**\\xec** matches `ì`, char code 236.

**\\xed** matches `í`, char code 237.

**\\xee** matches `î`, char code 238.

**\\xef** matches `ï`, char code 239.

**\\xf0** matches `ð`, char code 240.

**\\xf1** matches `ñ`, char code 241.

**\\xf2** matches `ò`, char code 242.

**\\xf3** matches `ó`, char code 243.

**\\xf4** matches `ô`, char code 244.

**\\xf5** matches `õ`, char code 245.

**\\xf6** matches `ö`, char code 246.

**\\xf7** matches `÷`, char code 247.

**\\xf8** matches `ø`, char code 248.

**\\xf9** matches `ù`, char code 249.

**\\xfa** matches `ú`, char code 250.

**\\xfb** matches `û`, char code 251.

**\\xfc** matches `ü`, char code 252.

**\\xfd** matches `ý`, char code 253.

**\\xfe** matches `þ`, char code 254.

**\\xff** matches `ÿ`, char code 255.