Regex for CSS Named Color

javascript

const regex = /^(?:red|blue|green|black|white|gray|grey|yellow|orange|purple|pink|brown|cyan|magenta|navy|teal|olive|maroon|lime|aqua|fuchsia|silver)$/;
const isValid = regex.test(value);

python

import re
pattern = r'^(?:red|blue|green|black|white|gray|grey|yellow|orange|purple|pink|brown|cyan|magenta|navy|teal|olive|maroon|lime|aqua|fuchsia|silver)$'
if re.match(pattern, value):
    print("valid")

ruby

pattern = /^(?:red|blue|green|black|white|gray|grey|yellow|orange|purple|pink|brown|cyan|magenta|navy|teal|olive|maroon|lime|aqua|fuchsia|silver)$/
if value =~ pattern
  puts "valid"
end

php

if (preg_match('/^(?:red|blue|green|black|white|gray|grey|yellow|orange|purple|pink|brown|cyan|magenta|navy|teal|olive|maroon|lime|aqua|fuchsia|silver)$/', $value)) {
    echo "valid";
}

java

String pattern = "^(?:red|blue|green|black|white|gray|grey|yellow|orange|purple|pink|brown|cyan|magenta|navy|teal|olive|maroon|lime|aqua|fuchsia|silver)$";
boolean isValid = value.matches(pattern);