Standardized RGB 256 Notation for CSS Functions.
For Example:
const str = "255, 255, 255"; // Match const str = "0, 10, 200"; // Match const str = "300, 400, 500"; // Does -NOT- Match
const str = "255, 255, 255"; // Match
const str = "0, 10, 200"; // Match
const str = "300, 400, 500"; // Does -NOT- Match