#183D8B
Blue
HEX
RGB
HSL
About #183D8B Blue
#183D8B is a blue color. In the RGB color model, it is composed of 24 red, 61 green, and 139 blue. In the HSL color space, it has a hue of 221°, saturation of 71%, and lightness of 32%.
This color has a low lightness value, making it a dark color great for text and bold accents. With high saturation, it appears vibrant and eye-catching.
CSS Code & Gradients
Use #183D8B in your CSS, SCSS, or Tailwind projects. Copy ready-to-use gradients.
Beautiful Gradients
Color Properties
221°
Hue
71%
Saturation
32%
Lightness
Blue
Color Harmonies
Colors that work well with #183D8B based on color theory.
Accessibility
WCAG 2.1 contrast ratio of #183D8B against white and black backgrounds.
Aa#183D8B on White
Contrast Ratio10.1:1
AA ✓AA Large ✓AAA ✓
Aa#183D8B on Black
Contrast Ratio2.08:1
AA ✗AA Large ✗AAA ✗
Color Conversion Table
Complete conversion of #183D8B across different color formats.
| Format | Value |
|---|---|
| HEX | #183D8B |
| RGB | rgb(24, 61, 139) |
| HSL | hsl(221, 71%, 32%) |
| RGB Decimal | 24, 61, 139 |
| RGB Percent | 9.4%, 23.9%, 54.5% |
| CMYK (approx.) | 83%, 56%, 0%, 45% |
Related Palettes
12 palettes using #183D8B or similar colors