rgbthe literal text rgb (case sensitive) \s*?any whitespace character, repeated any number of times
\(the literal ( (4010 / 508 / 2816)
\s*?any whitespace character, repeated any number of times
Group 2(000|0?\d{1,2}|1\d\d|2[0-4]\d|25[0-5]) 0?optionally matches the literal 0 (4810 / 608 / 3016)
\d{1,2}a digit, repeated between 1 and 2 times
1the literal 1 (4910 / 618 / 3116)
\da digit
\da digit
2the literal 2 (5010 / 628 / 3216)
0-4one character from 0 (4810) to 4 (5210)
\da digit
0-5one character from 0 (4810) to 5 (5310)
\s*?any whitespace character, repeated any number of times
,the literal , (4410 / 548 / 2C16)
\s*?any whitespace character, repeated any number of times
Group 3(000|0?\d{1,2}|1\d\d|2[0-4]\d|25[0-5]) 0?optionally matches the literal 0 (4810 / 608 / 3016)
\d{1,2}a digit, repeated between 1 and 2 times
1the literal 1 (4910 / 618 / 3116)
\da digit
\da digit
2the literal 2 (5010 / 628 / 3216)
0-4one character from 0 (4810) to 4 (5210)
\da digit
0-5one character from 0 (4810) to 5 (5310)
\s*?any whitespace character, repeated any number of times
,the literal , (4410 / 548 / 2C16)
\s*?any whitespace character, repeated any number of times
Group 4(000|0?\d{1,2}|1\d\d|2[0-4]\d|25[0-5]) 0?optionally matches the literal 0 (4810 / 608 / 3016)
\d{1,2}a digit, repeated between 1 and 2 times
1the literal 1 (4910 / 618 / 3116)
\da digit
\da digit
2the literal 2 (5010 / 628 / 3216)
0-4one character from 0 (4810) to 4 (5210)
\da digit
\s*?any whitespace character, repeated any number of times
\)the literal ) (4110 / 518 / 2916)