Image Color Picker Online

An image color picker samples the color under your cursor so you can reuse a HEX, RGB, HSL, or HSV value in CSS, design specs, or brand checks. This The ToolSphere picker loads an image onto a canvas, reads pixel data with getImageData, and converts RGB into the other notations used in the UI.

You can upload a file, paste an image from the clipboard, or load an image URL (with crossOrigin anonymous). Remote URLs may fail when the host blocks CORS—uploading the file avoids that limitation. A loupe magnifies the area under the pointer, and a simple palette lists frequent colors from a quantized pass over the image data.

Sampling uses the displayed canvas. Large images are scaled down so the longest side fits within 900 pixels for interaction. That means picks reflect the preview buffer’s pixels, which is ideal for matching what you see on screen, not a claim of laboratory spectrometer accuracy on the original megapixel file.

Designers and developers constantly lift colors from screenshots, product photos, and competitor pages. A click-to-copy picker is faster than guessing in a separate app.

Use the auto palette when you want a quick set of dominant-ish swatches, then refine with the loupe for exact UI chrome or logo colors.

• Click or drag to sample.
• HEX, RGB, HSL, and HSV readouts.
• Upload, paste, or URL load (CORS permitting).
• Runs in your browser; images are not uploaded to The ToolSphere servers for this tool.

The image is drawn to a canvas (scaled if needed). On pointer move/click, the tool maps CSS coordinates to canvas pixels, reads RGBA, ignores nearly transparent pixels (alpha below 16), and builds HEX via rgbToHex. HSL and HSV come from standard RGB conversions in the design color helpers.

Palette extraction walks image data with a stride, buckets colors by coarse RGB keys, weights by frequency, and returns up to eight representative colors—not a full clustering ML model.

Copied values are sRGB-style channel numbers from the canvas. Extremely compressed JPEG artifacts can make adjacent pixels noisy—use the loupe and average visually if needed.

URL loads that lack CORS will error; that is a browser security rule, not a The ToolSphere upload. Prefer local files for private screenshots.

Consistent color references keep brand UI aligned across CSS, Figma notes, and QA. Sampling from real assets catches colors that hex guesses miss.

Local sampling keeps proprietary mockups on your machine during inspection for this tool.

RGB channels are 0–255 from getImageData. HEX is #rrggbb. HSL/HSV use the project’s rgbToHsl and rgbToHsv helpers (degrees and percents rounded for display).

HEX = # + toHex(R) + toHex(G) + toHex(B)

R, G, B

Canvas pixel channels 0–255.

palette count

Up to 8 colors from frequency-weighted buckets.

MAX_DISPLAY

Preview longest side capped at 900px.

• Nearly transparent pixels are skipped when alpha < 16.
• Palette uses 4-bit-per-channel style bucketing with stride sampling.

Image Color Picker extracts HEX, RGB, HSL, and HSV from pixels you click, with a loupe and a lightweight palette. Load a file, paste, or try a CORS-friendly URL, then copy the values into your CSS or design notes.