Pixel Art Palette: How to Choose Colors for a Pixel-Grid Favicon

The short answer

A pixel art palette is a small, fixed set of colors used to draw an image one pixel at a time. For a favicon or another tiny logo icon, choose the fewest colors that keep the mark recognizable. Every color must be clearly different from its neighbors. The palette should come from your existing logo colors and work against both light and dark browser backgrounds. In practice, that usually means one or two brand colors, a contrasting background or outline color, and, only if the shape needs it, a single in-between shade to smooth curves and diagonals.

The rest of this guide explains the terms, walks through choosing a palette step by step, and shows how to check the result before you export the favicon.

Key terms

• Palette: the complete, limited list of colors allowed in the image. Every pixel uses one of these colors and nothing else.
• Pixel grid: the fixed grid of square cells that makes up a raster icon. At favicon sizes each cell is one visible pixel, so every color decision shows.
• Vector logo: artwork built from mathematical paths rather than pixels. It scales without losing quality, but it has to be converted (rasterized) to a pixel grid before it can become a small favicon.
• Anti-aliasing: the in-between colors that rendering software adds along edges to make curves look smooth. At small sizes these automatic tones can blur a logo and add colors you never chose.
• Indexed color: a way of storing an image where each pixel refers to an entry in a stored palette instead of holding its own full color value. Some PNG and GIF files work this way.

Why a limited palette matters for favicons

When a detailed vector logo is shrunk to a few pixels across, gradients, thin strokes and subtle tints merge into muddy, unpredictable tones. A deliberately chosen palette replaces that accidental mixing with planned colors. Each pixel then carries a clear meaning: shape, background, or edge. This is the main difference between a favicon that has been refined on the pixel grid and one that has simply been scaled down.

How to choose a palette for a pixel icon, step by step

• 1. Start from the approved logo colors. Take the brand colors from the official vector artwork or brand guidelines rather than sampling them from a screenshot or exported image, which may already have shifted.
• 2. Identify the mark's essential shapes. Decide which part of the logo must survive at the smallest size, such as a monogram, a symbol, or one distinctive form, and drop the rest.
• 3. Assign one color to each essential role. You typically need a main shape color, and either a background color or an outline that separates the shape from whatever surface the icon sits on.
• 4. Remove colors that are too similar. If two brand tones are hard to tell apart at a glance, merge them. Two near-identical colors waste space in the palette and read as noise at small sizes.
• 5. Add edge shades only where needed. If a curve or diagonal looks jagged, add one intermediate color between the shape and the background and place it by hand. This is controlled anti-aliasing instead of the automatic kind.
• 6. Decide how transparency will work. If the background is transparent, the outer pixels of the shape will sit directly on the browser's tab color, so the shape colors alone must carry enough contrast.
• 7. Lock the palette. Once the colors are set, draw or clean up every size of the icon using only those colors, so the different sizes look consistent with each other.

How to check the result

• View the icon at its actual display size, not zoomed in. A palette that looks fine when enlarged can fall apart at true size.
• Place it on both a light and a dark background to imitate light and dark browser themes. Any color that disappears on one of them needs adjusting, or the icon needs a background shape.
• Check it in grayscale. If the mark is unreadable without color, the palette depends on hue alone, and the light-dark contrast between colors is too weak.
• Count the colors actually used in the file. Exports and resampling can bring in stray tones, so confirm that only your chosen palette appears.
• Compare it side by side with the vector logo. The icon should be recognizably the same brand even though it is simplified.

Connecting the palette back to your logo artwork

Record the final palette values next to the master vector logo files so the favicon can be rebuilt or updated without guessing. Keep the hand-refined pixel versions as separate source files, because regenerating them automatically from the vector will reintroduce automatic anti-aliasing and extra colors.

File formats need a word of caution. A file's extension does not show what it contains. An SVG can hold embedded raster images, and a PNG may or may not use an indexed palette. Neither format tells you whether you are allowed to reuse the logo. Inspect the actual file contents, and confirm usage rights with the logo owner before adapting artwork you did not create.

Gaps in this guide

No source material was available for this guide that gives specific color counts, contrast thresholds, required favicon sizes for particular browsers or platforms, or recommended named palettes. The steps above are general design recommendations, not documented requirements. For exact size and format specifications, check the current documentation for each browser or platform you are targeting. Where the icon must meet accessibility or brand standards, use the thresholds those standards define.