COLOR SYSTEM

Color Toolbox

Convert colors and protect accessible contrast.

Convert colors and check contrast.

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Color Picker

#3B82F6
rgb(59, 130, 246)
hsl(217, 91%, 60%)

WCAG Contrast Checker

Sample Heading

This is sample text to preview the color contrast.

21.00:1
AAA
Normal Text AA✓ Pass
Normal Text AAA✓ Pass
Large Text AA✓ Pass
Large Text AAA✓ Pass

* Large text means 18pt (24px) or larger, or 14pt (18.5px) bold or larger

About WCAG Standards

  • WCAG (Web Content Accessibility Guidelines) are web accessibility standards
  • AA level is the minimum for legal and corporate standards, AAA is the highest
  • Contrast ratio of at least 4.5:1 ensures readability for most users including those with visual impairments
  • Use this tool to design more inclusive and accessible interfaces

Color Toolbox Help, Examples, and FAQ

Usage Guide

The color toolbox converts between HEX, RGB, HSL, and related formats, and checks contrast between foreground and background colors. Enter or pick a color to copy values for CSS, design files, and component themes. Contrast checks follow WCAG-style thresholds and help you judge whether body text, large text, and important buttons are readable enough. Do not rely only on visual instinct: light text on bright backgrounds, muted text on dark cards, and brand-color buttons with white labels can all become difficult to read on real devices.

Examples

  • Convert a HEX value from a design file into RGB or HSL for CSS variables.
  • Check whether button text meets AA contrast before deciding to darken the background color.
  • Preview secondary text, borders, and status colors while tuning a dark theme.

FAQ

  • Should I target AA or AAA? AA is a practical baseline for most products; AAA is stricter and useful for reading-heavy experiences.
  • What if a brand color fails? Adjust lightness, change text color, add supporting treatment, or use clearer states.
  • Does passing contrast guarantee good design? No. It addresses readability, but hierarchy, size, and spacing still matter.
Color Converter & Contrast Checker | GoTools