RGB to Hex Converter
Use RGB sliders (with alpha) or paste a hex code. Get hex, RGBA, HSL, and the nearest of 140 CSS named colors. Check WCAG contrast (AA/AAA) and explore matching palettes — click any swatch to copy.
RGB sliders
R37
G99
B235
A1.00
Values (click to copy)
Contrast (WCAG)
vs white5.17:1 · AA
vs black4.06:1 · Fails
Tints (lighter)
Shades (darker)
Complementary
Analogous
Triadic
All conversions and palette generation happen in your browser. Nothing is uploaded.
How to use this rgb to hex converter
- Adjust RGB sliders (with alpha) or paste a hex code.
- View hex, RGB, RGBA, HSL and nearest CSS color name.
- Check WCAG contrast against white and black.
- Click any swatch in tints, shades, complementary, analogous or triadic to copy.
Frequently asked questions
How do I convert RGB to hex?
Each RGB component (0-255) is converted to a 2-digit hexadecimal value. RGB(37, 99, 235) becomes #2563eb.
What does the nearest CSS color name show?
The closest of 140 CSS named colors (red, dodgerblue, lavender, etc.) by Euclidean distance — useful when you need a friendly name.
Can I include transparency?
Yes. Adjust the alpha slider for an 8-digit hex like #2563ebcc.
Is anything uploaded?
No. All conversions and palettes happen in your browser.