HTML Color Picker — Free Online Color Picker Tool

Choosing the right color is half the battle in web design. Our free HTML Color Picker gives you a visual color picker wheel with instant HEX, RGB, and HSL value output — plus one-click copy for any format, recent color history, and manual HEX input. Everything you need to pick the perfect color for your UI, CSS, or design system.

What Is an HTML Color Picker?

An HTML color picker is a tool that allows you to visually select a color and retrieve its code in the formats used by web technologies:

• HEX (#3498db) — 6-digit hexadecimal code, the most widely used format in HTML and CSS
• RGB (rgb(52, 152, 219)) — Red, Green, Blue channel values from 0–255, native to CSS
• HSL (hsl(204, 70%, 53%)) — Hue, Saturation, Lightness — preferred by designers for intuitive color manipulation

All three formats represent exactly the same color — they’re different ways of expressing it. The color picker shows all three simultaneously so you can copy whichever your project needs.

How to Use the HTML Color Picker

1. Click the color swatch to open your browser’s native color picker interface
2. Drag the cursor across the color spectrum to select any hue and saturation
3. The HEX, RGB, and HSL values update in real time as you pick
4. Click Copy next to any format to copy it to your clipboard
5. Type a HEX value directly into the HEX input field and press Enter to set an exact color
6. Colors you’ve copied are saved in the Recent Colors panel for quick reuse

Understanding Color Formats

HEX (Hexadecimal)

HEX is the most common color format in web development. Expressed as #RRGGBB where RR, GG, BB are two-digit hexadecimal numbers (00–FF) representing the intensity of red, green, and blue channels.

color: #3498db;         /* Cornflower Blue */
background: #1a1a2e;   /* Dark Navy */
border-color: #e74c3c; /* Vivid Red */

A shorthand form exists for colors where each channel pair repeats: #336699 can be written as #369.

RGB (Red, Green, Blue)

RGB uses decimal integers (0–255) for each channel. In CSS:

color: rgb(52, 152, 219);        /* Solid color */
color: rgba(52, 152, 219, 0.7);  /* 70% opacity */

RGB is intuitive for programmatic color manipulation — adding or subtracting from channel values moves the color in predictable directions.

HSL (Hue, Saturation, Lightness)

HSL is the most human-intuitive color model. It separates:

• Hue (0–360°) — the “color” on a color wheel. 0° = red, 120° = green, 240° = blue
• Saturation (0–100%) — how vivid the color is. 0% = gray, 100% = fully vivid
• Lightness (0–100%) — how light or dark. 0% = black, 50% = pure color, 100% = white

color: hsl(204, 70%, 53%);                /* Mid-tone blue */
color: hsl(204, 70%, 35%);                /* Darker variant */
color: hsl(204, 70%, 70%);                /* Lighter variant */
color: hsla(204, 70%, 53%, 0.5);          /* 50% transparent */

HSL is preferred in design systems because you can generate color palettes by holding Hue and Saturation constant while varying Lightness: one hue produces a full range from dark to light.

Color Theory for Web Design

Creating a Harmonious Color Palette

Complementary colors sit opposite each other on the color wheel (180° apart). They create high contrast:

• Blue (hsl(210, 80%, 50%)) + Orange (hsl(30, 80%, 50%))

Analogous colors are adjacent on the wheel (30–60° apart). They create cohesive, harmonious palettes:

• Blue + Blue-Green + Green

Triadic colors are evenly spaced (120° apart). Vibrant, balanced:

• Red + Yellow + Blue

Neutral palette uses low saturation colors with slight warmth or coolness:

• hsl(220, 10%, 90%) for light backgrounds, hsl(220, 15%, 15%) for dark backgrounds

Accessibility: Color Contrast Ratios

WCAG (Web Content Accessibility Guidelines) 2.1 requires:

• AA compliance: 4.5:1 contrast ratio for body text, 3:1 for large text
• AAA compliance: 7:1 contrast ratio for body text

Always check that your text/background color combinations meet these ratios. Dark text on light backgrounds or light text on dark backgrounds typically meets AA.

Common Color Use Cases

• Brand colors — Pick and copy your exact brand color codes for use in CSS, Figma, or Sketch
• Gradients — Select start and end colors for linear-gradient() CSS rules
• Theme tokens — Define --primary, --secondary, --accent CSS custom property values
• Prototyping — Quickly explore color palettes without opening a design tool
• Color matching — Type in a HEX from a brand guide to see its RGB and HSL equivalents

Frequently Asked Questions

What is the difference between HEX and RGB?

They represent the same color in different notations. HEX uses hexadecimal (base-16) values; RGB uses decimal (base-10). #3498DB in HEX breaks down as: R=52 (34 in hex), G=152 (98 in hex), B=219 (DB in hex) — giving rgb(52, 152, 219).

Can I input a color by name (like “tomato” or “steelblue”)?

CSS color names are not directly supported in this picker. To use a named color, find its HEX value from a CSS reference (e.g., tomato = #FF6347) and type it into the HEX input field.

Does the color picker support OKLCH or P3 colors?

This tool works with sRGB colors (HEX, RGB, HSL). Wide-gamut color formats like oklch() and display-p3 are newer CSS features supported by some modern browsers. For wide-gamut color work, you would need to cross-reference with a specialized tool.

How do I create a CSS gradient using this picker?

Pick your first color and copy its HEX (e.g., #3498db). Then pick your second color (e.g., #2ecc71). In your CSS: background: linear-gradient(135deg, #3498db, #2ecc71);

What is the “Recent Colors” panel?

Every time you click a Copy button, the selected color is saved to a “Recent Colors” row below the picker. Click any swatch in the row to re-apply that color. Up to 10 recent colors are stored in your browser session.