Our free Color Picker & Converter allows web developers, UI designers, and digital artists to sample screen pixel colors via the native EyeDropper API and convert color codes across sRGB, HSL, HSV, and CMYK formats. Fine-tune hue angles, saturation percentages, lightness, and alpha opacity while evaluating WCAG 2.1 relative luminance ratios against light and dark backgrounds. Generate instant 10-step monochromatic tint/shade palettes, complementary harmonies, CSS custom variables, and Tailwind utility classes—executing 100% inside your browser JavaScript engine with zero server uploads.
Sample screen pixels using the native EyeDropper tool, select colors visually, or paste raw HEX/RGB strings.
Adjust Hue, Saturation, Lightness, and Alpha sliders while reviewing WCAG 2.1 contrast ratings and color harmonies.
Export instant codes for HEX, RGBA, HSLA, CMYK, CSS variables, or Tailwind CSS classes with one click.
Instantly translates color coordinates across additive sRGB (HEX, RGB, RGBA), cylindrical perceptual spaces (HSL, HSLA, HSV), and subtractive print metrics (CMYK).
Calculates exact relative luminance ratios against pure white and black backgrounds, certifying compliance with WCAG 2.1 AA and AAA readability standards.
Executes 100% inside your browser using client-side JavaScript. Stores recent swatches in local storage with zero server uploads or external tracking.
window.EyeDropper API to sample pixel colors directly from your display. Clicking the EyeDropper button opens a magnifying loupe, allowing you to pick colors from any visible element or application on your desktop.L = 0.2126*R + 0.7152*G + 0.0722*B. Normal text requires a minimum ratio of 4.5:1 for AA level compliance and 7.0:1 for AAA level compliance.Digital display monitors reproduce visual imagery through additive sRGB color mixing, combining red, green, and blue light channels mapped from 0 to 255. While HEX (#RRGGBB) codes provide hexadecimal representations for web stylesheets, human visual perception aligns more naturally with cylindrical coordinates such as HSL (Hue, Saturation, Lightness) and HSV (Hue, Saturation, Value). This converter performs bidirectional mathematical transformations between additive matrix channels and cylindrical geometry, allowing web designers to manipulate hue angles (0° to 360°) and chroma levels while preserving exact sRGB color accuracy.
For web accessibility compliance, this tool evaluates relative luminance according to W3C WCAG 2.1 specifications. Relative luminance L is calculated by linearizing gamma-corrected sRGB channels (L = 0.2126 * R + 0.7152 * G + 0.0722 * B) to determine luminance contrast ratios against background elements ((L1 + 0.05) / (L2 + 0.05)). Furthermore, for print publishing workflows, the engine computes subtractive CMYK (Cyan, Magenta, Yellow, Key/Black) ink values, and leverages the browser's native window.EyeDropper interface to sample screen pixels with hardware-level accuracy.
To streamline developer workflows, our client-side engine generates instant CSS variables (e.g. --color-primary: #6AF0C8;) and Tailwind utility classes (e.g. bg-[#6AF0C8]). In addition, local storage history tracking preserves your 8 most recently sampled colors without uploading data to external analytics or database systems. This local architecture ensures sub-millisecond conversion speeds and absolute privacy for proprietary branding palettes.