RGB-to-Hex Color Converter

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RGB-to-Hex Conversion

JavaScript FAQ | JavaScript Colors FAQ

Question: How do I convert RGB values of a color to a hexadecimal string?

Answer: The RGB-to-hexadecimal converter algorithm is simple: make sure that your R, G, B (red, green, blue) values are in the range 0...255, convert R, G, B to hex strings, and then concatenate the three hex strings together. Convert RGB to Hex color values here:

R: G: B:

Source code Source code | See also Hex-to-RGB | RGB-to-CMYK | RGB-to-HSV | Color names function rgbToHex(R,G,B) {return toHex(R)+toHex(G)+toHex(B)} function toHex(n) { n = parseInt(n,10); if (isNaN(n)) return "00"; n = Math.max(0,Math.min(n,255)); return "0123456789ABCDEF".charAt((n-n%16)/16) + "0123456789ABCDEF".charAt(n%16); } Notes: The script parses the input R, G, B values as integers using the standard function parseInt(string,10); the second, optional argument 10 specifies that the value must be parsed as a decimal number. (If we omit the 10, the script would still work, except for some input values starting with 0, e.g. 009 or 011, where it might incorrectly assume octal input.) We use the standard functions Math.min and Math.max to make sure that the input values are within the range from 0 to 255. The interested reader might notice that a nicer way to convert n to a hexadecimal string is to use n.toString(16); however, the above code was written back in the ancient era when JavaScript 1.0 was still around, and the construct n.toString(16) won't work in JavaScript 1.0!

RGB/hex codes for named colors supported in most browsers are listed below:

See also:

• JavaScript Colors FAQ • Hex to RGB color converter • Hex to CMYK color converter • RGB to CMYK color converter • RGB to HSV color converter • Changing the page background color • Changing the color of HTML elements • Predefined color names (alphabetical list) • Applying another stylesheet to my page • Changing the mouse cursor style

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