About WhatColorIsIt

When you upload an image, it is drawn onto an HTML5 Canvas element entirely in your browser. No file is ever sent to a server. The raw pixel data is then sampled and quantized into color buckets using a simple but effective median-cut approach.

Colors are grouped by proximity in RGB space, sorted by frequency, and the top results are surfaced as your palette. Each color is assigned a human-readable name based on its hue, saturation, and lightness.

The entire analysis happens in milliseconds on your device — no API keys, no cloud processing, no waiting.

Hex codes (like #FF6B35) represent colors as three pairs of hexadecimal digits for red, green, and blue channels (0–255 each).

RGB values (like rgb(255, 107, 53)) express the same information as decimal numbers — easier to read, same color space.

Dominant colors are the colors that appear most frequently in an image. A sunset photo might have dominant oranges and pinks even if it also contains blues and purples.