After you upload or paste one image, the browser draws it to a small analysis canvas with the longest side capped at 160 px. The extractor groups nearby RGB buckets, merges similar swatches, and can return 4, 6, or 8 dominant colors while optionally ignoring transparent pixels or near-white backgrounds. You can expand the full palette to copy every merged color, and move your mouse over the original image to pick the exact color at any spot into a picked-colors list.
Each swatch shows HEX, RGB, approximate share, recommended black or white text, and a WCAG-style contrast hint. These values are useful for quick design exploration, but they are sampled from a downscaled browser bitmap and are not a substitute for calibrated color management or print proofing.
Common questions and answers about this topic.
No. The image is decoded and sampled in your browser with HTML5 Canvas. It does not leave your device.
They are optimized for quick palette discovery. The tool samples a downscaled image and groups nearby RGB colors, so it is not a replacement for calibrated color workflows.
Yes. Each swatch includes HEX and RGB values, and the copy button copies the HEX code.