Color Picker

Pick Any Color and Convert Between Every Format Instantly

Color format conversion is one of those small but genuinely frequent friction points in frontend development and design work. Your design file specifies a color in HSL because that's how the designer thought about the palette. Your CSS codebase uses HEX throughout for consistency. Your JavaScript animation library expects RGB tuples. None of these formats are interchangeable in code—a hex string where an RGB array is expected doesn't work, and getting the conversion wrong produces visibly wrong colors that waste debugging time.

Our free color picker tool eliminates that friction. Enter a color in any supported format—HEX, RGB, HSL, or HSB—and the tool instantly displays the equivalent value in every other format simultaneously. Click the canvas to pick a color visually, or type a known value to get its conversions. Copy whichever format your current context requires and continue working. The whole process takes seconds rather than minutes spent hunting through conversion formulas or switching between applications.

Understanding the Four Major Color Formats

Each color representation format was designed for a different use case, and knowing the strengths of each helps you choose the right one for your specific situation rather than defaulting to HEX everywhere out of habit.

HEX (Hexadecimal)

HEX color notation represents a color as a six-character string of hexadecimal digits prefixed with a hash sign: `#RRGGBB`. Each pair of characters encodes the intensity of one color channel—red, green, and blue—on a scale from 00 (0 in decimal) to FF (255 in decimal). The color `#3B82F6` has 59 red, 130 green, and 246 blue—a bright blue. HEX is the most widely used format in CSS and design tools because it's compact and unambiguous. A three-character shorthand exists for colors where both digits in each pair are identical: `#FFFFFF` shortens to `#FFF`, `#000000` to `#000`, `#FF6600` to `#F60`.

HEX does not natively support transparency. For colors with an alpha channel, HEXA notation adds two additional characters: `#RRGGBBAA`, where AA is the opacity value from 00 (fully transparent) to FF (fully opaque). In CSS, `rgba()` notation is more commonly used for transparency.

RGB and RGBA

RGB notation expresses colors as three decimal integers from 0 to 255, one per channel: `rgb(59, 130, 246)` for the same blue as `#3B82F6`. The RGBA variant adds a fourth parameter for the alpha (opacity) channel, expressed as a decimal from 0 (fully transparent) to 1 (fully opaque): `rgba(59, 130, 246, 0.5)` is a 50% transparent version of the same blue.

RGB is preferred over HEX when you need to manipulate a color programmatically in JavaScript—it's much easier to increment a red channel value by 20 when you have the integer directly than when it's embedded in a hex string. For CSS transitions that animate color values, RGBA also gives cleaner results because the browser interpolates the individual channel integers directly.

HSL and HSLA

HSL notation describes color in terms of three parameters that map more intuitively to human color perception: Hue (the color wheel position as a degree value from 0 to 360), Saturation (the color intensity as a percentage from 0% gray to 100% fully vivid), and Lightness (the brightness from 0% black to 100% white). The same blue in HSL is approximately `hsl(217, 91%, 60%)`.

HSL is particularly valuable for design systems and programmatic palette generation because adjusting a single parameter produces a predictable result. To generate a lighter tint of a color, increase the lightness value. To create a muted variant, decrease the saturation. To find an analogous color, shift the hue by 30 degrees. These operations are arithmetically trivial in HSL but require complex calculations in HEX or RGB. Modern CSS color functions like `color-mix()` and relative color syntax build directly on HSL's intuitive parameter model.

HSB / HSV

HSB (Hue, Saturation, Brightness), also called HSV (Hue, Saturation, Value), uses the same hue and saturation concepts as HSL but replaces lightness with brightness/value. In HSB, a fully saturated, maximum-brightness color is the most vivid version of that hue—equivalent to HSL's behavior at 50% lightness. At 0% brightness, HSB produces black regardless of hue. Photoshop and many design applications use HSB internally for their color pickers, which is why designers working with those tools often encounter HSB values that need to be converted for CSS use.

Practical Color Work: When You Need Each Format

Building a Design System Color Scale

When generating a systematic tint/shade scale from a single base color—the kind of 50-to-950 scale used in design systems like Tailwind CSS—HSL is the most practical format. Fix the hue and saturation of your base color, then systematically adjust the lightness value across your target scale steps. The conversions our tool provides let you verify that each generated lightness value looks right and export the HEX or RGB values that your CSS custom properties will use.

Matching Colors from Design Mockups

Design mockups often specify colors in one format while your CSS codebase expects another. A Figma mockup might export a specific purple as `hsl(263, 70%, 50%)`, while your stylesheet convention uses HEX. Rather than manually computing the conversion, paste the HSL value into our tool and copy the resulting HEX in one step.

Accessibility Contrast Checking

WCAG contrast ratio calculations require the relative luminance of two colors, which is derived from their linear RGB values. Knowing the RGB breakdown of your text color and background color is the starting point for any contrast ratio check. Our tool provides the RGB values for any color you pick, which you can then feed into a contrast checker to verify accessibility compliance.

Free, Private, and Browser-Based

The color picker runs entirely in your browser. No color values or selections are transmitted to any server. The tool is completely free with no account required. Use it whenever you need a quick format conversion, want to explore a color visually, or need to translate between a designer's specification and a developer's implementation.