CalcaTools

Color Picker | Pick Colors and Copy HEX, RGB, HSL & CSS Values

Pick any color visually and get its HEX, RGB, HSL and CSS values instantly, each copyable with one click. The designer's quick reference for matching colors across tools and code.

Last updated: June 2026 · Free · No sign-up required

Color Values (click to copy)
HEX#3B82F6
RGBrgb(59, 130, 246)
HSLhsl(217, 91%, 60%)

Frequently Asked Questions

What color formats does this picker support?

This color picker provides values in HEX, RGB (Red, Green, Blue), and HSL (Hue, Saturation, Lightness) formats.

What is the difference between HEX and HSL?

HEX is a hexadecimal representation of RGB values. HSL represents colors in terms of hue (color angle), saturation (intensity), and lightness, which is often more intuitive for designers to adjust.

Can I paste a HEX code to preview a color?

Yes, typing or pasting a valid 6-character hex code (prefixed with '#') into the HEX input field will instantly update the picker and display all format conversions.

Quick reference

ColorHEXRGB
White#FFFFFF255, 255, 255
Black#0000000, 0, 0
Red#FF0000255, 0, 0
Green#00FF000, 255, 0
Blue#0000FF0, 0, 255

info Color Picker

Free color tools calculator — enter your numbers and get an instant, accurate result.

info Private by design

Everything runs locally in your browser. No uploads, no accounts, no tracking.

info Works everywhere

Fully responsive and mobile-friendly — calculate on any device, any time.

info Educational

Includes the formula and step-by-step explanation so you understand the math, not just the answer.

Interpretation guide

FormatWhat it encodes
HEX#RRGGBB, two hex digits per channel (0–FF)
RGBRed, green, blue 0–255
HSLHue 0–360, saturation %, lightness %
RGBA / HSLAAdds an alpha (opacity) channel

lightbulb Worked example

Let's say you are using the Color Picker. A free color picker tool for designers and developers. Pick any color and get its HEX, RGB, HSL, and CSS values instantly. Click any value to copy it. Enter the values that match your situation into the input fields and press calculate — using realistic numbers makes the result directly useful for you.

Result: The calculator instantly applies the formula HEX #RRGGBB: each pair = channel value in base 16 (00 = 0, FF = 255) and returns the result with appropriate precision.

What this means: Read the result in the context of what you are measuring. The step-by-step breakdown lets you confirm the math and understand which input most affects the outcome.

Formula & methodology

Formula: HEX #RRGGBB: each pair = channel value in base 16 (00 = 0, FF = 255)

How color values are decoded

The tool decodes HEX #RRGGBB by reading each two-digit pair as a base-16 channel value — 00 is 0 and FF is 255 — so #336699 decodes to red 51, green 102, blue 153. The RGB values then convert to HSL and other formats using the standard color-space formulas.

Example: #FFFFFF is rgb(255,255,255) white, #000000 is black, and #FF0000 is pure red — each pair maps directly to a channel.

Reading the result: every color you pick is shown in HEX, RGB, HSL, and CSS-ready formats simultaneously, each copyable in one click. Designers use the simultaneous views to translate between design tools and code without manual conversion errors.

Authoritative source: W3Schools Colors

Frequently asked questions

What is a HEX color code?
A HEX color code is a six-digit base-16 representation of a color, written as #RRGGBB. Each pair of digits gives the red, green, and blue intensity from 00 (none) to FF (255, full). For example, #FF0000 is pure red. A shorthand three-digit form (#F00) doubles each digit.
How do I convert HEX to RGB?
Split the six HEX digits into three pairs and convert each pair from base 16 to a 0-255 decimal value. For #3B82F6: 3B = 59, 82 = 130, F6 = 246, giving rgb(59, 130, 246). A color picker does this instantly and lets you copy whichever format you need.
What is the difference between RGB and HSL?
RGB defines a color by the amounts of red, green, and blue light (each 0-255). HSL defines it by hue (the color's position on the wheel, 0-360 degrees), saturation (how vivid, 0-100%), and lightness (0-100%). HSL is often easier for humans to adjust — you can lighten or desaturate a color by changing one value.
What does the alpha channel do?
The alpha channel controls opacity, from 0 (fully transparent) to 1 (fully opaque) in RGBA/HSLA, or as a third HEX pair in 8-digit hex (#RRGGBBAA). It lets colors blend with whatever is behind them, which is essential for overlays, shadows, and translucent UI elements.
Which color format should I use for web design?
All modern browsers support HEX, RGB(A), and HSL(A) in CSS, so any of them works. HEX is the most common for solid brand colors, RGBA is handy when you need transparency, and HSL is great for programmatically generating tints and shades. Use whatever your design system or brand guide specifies.
What does the Color Picker do?
A free color picker tool for designers and developers. Pick any color and get its HEX, RGB, HSL, and CSS values instantly. Click any value to copy it. The calculator takes your inputs, applies the standard calculation, and returns a clear result so you can make an informed decision without doing the math by hand.
What formula does the Color Picker use?
It decodes HEX #RRGGBB by converting each pair from base 16: each pair = channel value in base 16, where 00 = 0 and FF = 255. Pick any color and the tool returns its HEX, RGB, HSL, and CSS values instantly, each clickable to copy. The live preview lets you verify the color before using it in your design or stylesheet.
Is the Color Picker free and private?
Yes — the Color Picker. There is no sign-up, no paywall, no trial, and no limit on how many calculations you can run. CalcaTools covers its costs with non-intrusive display advertising, so the calculator itself never asks for payment or restricts any feature.
How accurate is the Color Picker?
The Color Picker applies the standard formula: HEX #RRGGBB: each pair = channel value in base 16 (00 = 0, FF = 255). It is tested against published worked examples before launch and uses native double-precision arithmetic, so results are accurate to typical precision for the values you enter — with no intermediate rounding that could distort the answer.

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