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JavaScript Logo Color Codes

The commonly cited hex values for the yellow-and-black JavaScript logo, how to verify them in a vector file, and what a color code does and does not cover.

Published

Contents
  1. The short answer
  2. Which logo this covers
  3. Verifying the colors in a vector file
  4. Print and other color spaces
  5. Color codes versus permission to use the logo
  6. Gaps in the available evidence

The short answer

When people ask for the JavaScript logo colors, they usually mean the square yellow badge with black "JS" lettering in the lower-right corner. Its colors are widely cited as a bright yellow, #F7DF1E, and pure black, #000000. No source evidence confirming these values was supplied for this article, so treat them as the commonly circulated figures, not authoritative specifications. The steps below show how to check them against the artwork you actually have.

Logo element | Commonly cited hex | RGB equivalent | Status
Background square | #F7DF1E | 247, 223, 30 | Widely cited; not confirmed by supplied evidence
"JS" lettering | #000000 | 0, 0, 0 | Widely cited; not confirmed by supplied evidence

The RGB column is a direct arithmetic conversion of each hex value. It adds no new information, and it inherits the same uncertainty as the hex codes.

Which logo this covers

This article covers the two-color square badge only. The evidence supplied here does not establish who published the badge, whether any standards body or company formally owns it, or whether an official color specification exists. Related marks for JavaScript runtimes, frameworks and supersets are separate logos with their own palettes, and they are outside the scope of this article.

Verifying the colors in a vector file

Check the values in the file you plan to use, because copies of the badge circulate in many versions. The reliable method is to read the fill values stored in the vector shapes, not to sample colors from what appears on screen.

  • Open an SVG in a plain-text editor and search for fill attributes or style declarations on the background shape and the letter paths.
  • In a vector editor, select each shape individually and read its fill value from the color or appearance panel.
  • If selecting the artwork reveals a single image object instead of separate shapes, the file contains an embedded raster image. Any color you pick from it is a sampled pixel value and may be shifted by compression or a color profile.
  • Do not assume a file holds editable paths just because its extension is .svg, .eps, .ai or .pdf. These formats can wrap a bitmap, so confirm by inspecting the contents.
  • Treat PNG or JPG previews and thumbnails as approximations. A color picked from a preview reflects that image's rendering, not the source artwork.

The snippet below is an illustrative pattern, not an excerpt from any specific logo file. It shows what clean, editable fill values look like in SVG markup:

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100">
  <rect width="100" height="100" fill="#F7DF1E"/>
  <path d="..." fill="#000000"/>
</svg>

If the fills in your file differ from the commonly cited values, decide deliberately which one to follow. For brand consistency, matching the source artwork you are licensed to use generally matters more than matching a figure circulated online.

Hex codes describe screen (RGB) color. No CMYK or Pantone equivalents were supplied for this logo, and this article does not assume that any official ones exist. A conversion produced by a design tool is an approximation that depends on the color profile in use. For print work, choose a conversion intentionally and check it with a physical proof, because saturated yellows in particular can shift between screen and paper.

Knowing the hex values lets you match a palette, but it grants no rights to the artwork. Being able to download a logo file is also separate from permission to modify it, redistribute it, or use its lettering and associated names. Check the license terms attached to the specific file you obtained. Keep in mind that the JavaScript name may carry trademark considerations independent of any artwork license. Using the same yellow and black in your own unrelated design is a different question from reproducing or altering the badge itself.

Gaps in the available evidence

  • No supplied source confirms #F7DF1E and #000000 as official values.
  • No supplied source establishes the badge's owner, publisher or license terms.
  • No CMYK, Pantone or other print specifications were supplied.
  • No supplied source specifies the badge's typeface, proportions or clear-space rules.