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Common Web Colors: Hex and RGB Reference Chart

Last updated: March 2026 4 min read
Quick Answer

Table of Contents

  1. Black, White, and Grays
  2. Primary and Secondary Colors
  3. Common UI and Brand Colors
  4. Reading the Chart
  5. Frequently Asked Questions

Below is a reference chart of the most frequently needed web colors in both hex and RGB format. Bookmark this page for quick lookups — or paste any hex code into the converter above for an instant result on any color not listed here.

Black, White, and Common Grays

ColorHexRGB
White#FFFFFFrgb(255, 255, 255)
Black#000000rgb(0, 0, 0)
Light Gray#F3F4F6rgb(243, 244, 246)
Medium Gray#9CA3AFrgb(156, 163, 175)
Dark Gray#374151rgb(55, 65, 81)
Charcoal#1F2937rgb(31, 41, 55)

Primary and Secondary Colors

ColorHexRGB
Red#EF4444rgb(239, 68, 68)
Orange#F97316rgb(249, 115, 22)
Yellow#EAB308rgb(234, 179, 8)
Green#22C55Ergb(34, 197, 94)
Blue#3B82F6rgb(59, 130, 246)
Purple#A855F7rgb(168, 85, 247)
Pink#EC4899rgb(236, 72, 153)
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Common UI and Brand Color Reference

ColorHexRGB
Link Blue#2563EBrgb(37, 99, 235)
Success Green#16A34Argb(22, 163, 74)
Warning Amber#D97706rgb(217, 119, 6)
Error Red#DC2626rgb(220, 38, 38)
Body Text#111827rgb(17, 24, 39)
Muted Text#6B7280rgb(107, 114, 128)
Border Gray#E5E7EBrgb(229, 231, 235)

How to Use This Reference Chart

These values are drawn from the Tailwind CSS color palette, which has become a widely used baseline for UI color decisions. The exact shades vary by design system — your brand red may be #E53E3E rather than #EF4444.

For any color not in this chart, paste the hex code into the converter above for an instant RGB and HSL result. The converter also works in reverse — enter RGB values to get the hex code back.

Find Any Color Not on This Chart

Paste any hex code into the converter above for instant RGB, HSL, and a live color preview.

Open Hex to RGB Converter

Frequently Asked Questions

What is the hex code for pure red, green, and blue?

Pure red: #FF0000 / rgb(255,0,0). Pure green: #00FF00 / rgb(0,255,0). Pure blue: #0000FF / rgb(0,0,255). These are the maximum values for each channel with the other two at zero.

What hex code should I use for standard link blue?

#2563EB (rgb 37, 99, 235) is a modern, accessible link blue used widely in design systems. Classic browser default blue is #0000EE. Either reads clearly on white backgrounds.

What is the RGB for transparent white?

White is rgb(255, 255, 255). For transparent white, use rgba(255, 255, 255, 0.5) — or any alpha value between 0 and 1 depending on your needed opacity level.

How are the gray values in this chart chosen?

These grays are from the Tailwind CSS gray-400 through gray-900 scale, which is widely used in modern UI design. The numbers in the Tailwind scale (100-900) roughly correspond to lightness — 100 is near white, 900 is near black.

Alicia Grant
Alicia Grant Frontend Engineer

Alicia leads image and PDF tool development at WildandFree, specializing in high-performance client-side browser tools.

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