Color Converter (HEX/RGB/CMYK) - WCAG Contrast Checker Tool

Convert HEX, RGB, HSL, and CMYK with a built-in WCAG contrast checker. Local-only privacy—no uploads. Get print-ready CMYK values and copy results now.

Text Preview

Converted Values

RGBrgb(59, 130, 246)
HSLhsl(217, 91%, 60%)
CMYKcmyk(76%, 47%, 0%, 4%)

Accessibility (WCAG)

White Text0.00:1
Normal Text (AA)Fail
Large Text (AA)Fail
Black Text0.00:1
Normal Text (AA)Fail
Large Text (AA)Fail

How to Use

  1. Enter a color (e.g., #3b82f6) or use the picker.
  2. Copy converted values (RGB/HSL/CMYK) instantly.
  3. Check WCAG results for black/white text readability.
  4. Use CMYK output for print-ready design specs.

Core Features

  • WCAG Contrast Check: Calculate contrast ratios and show AA/AAA pass/fail instantly.
  • CMYK for Print: Convert screen colors to print-ready CMYK percentages.
  • HSL Color Space: Work with HSL for more intuitive hue/saturation/lightness edits.
  • System Color Picker: Pick colors with your OS picker for accuracy.
  • Keep it private: All conversions run locally in your browser.

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Calculation Logic

  • Conversions implement standard RGB↔HSL and RGB↔CMYK math.
  • WCAG uses relative luminance and a contrast ratio.
  • Luminance can be expressed as (L = 0.2126R + 0.7152G + 0.0722B).
  • Contrast ratio: (\frac{L_1 + 0.05}{L_2 + 0.05}), then compare against AA/AAA thresholds.

FAQ

How to check if my colors are accessible (WCAG)?

Enter your colors and review the WCAG panel. We calculate contrast ratios against black/white text and show AA/AAA pass/fail.

How to convert HEX to CMYK for printing?

Type a HEX code (e.g., #FF0000). We instantly convert it into CMYK percentages for print design.

Is my data safe (local/privacy)?

Yes. Everything runs locally in your browser with no uploads or server storage.

Is it free? Any limits?

It’s free with no sign-up. Copy values anytime.

How is WCAG contrast calculated?

We compute relative luminance for foreground/background, then use (\frac{L_1 + 0.05}{L_2 + 0.05}) to get the contrast ratio and evaluate AA/AAA.