#3377bb
a balanced, vivid blue · cool · closest name: steelblue
RGB
51, 119, 187
HSL
210°, 57%, 47%
CMYK
73, 36, 0, 27
Luminance
0.1749
Every format
| HEX | #3377bb |
| RGB | rgb(51, 119, 187) |
| HSL | hsl(210, 57%, 47%) |
| CMYK | cmyk(73%, 36%, 0%, 27%) |
| LAB | lab(48.9 1.7 -41.9) |
| LCH | lch(48.9 42.0 272.4) |
| OKLCH | oklch(0.559 0.126 251.1) |
Copy-ready code
/* CSS */
color: #3377bb;
background-color: #3377bb;
/* Tailwind (arbitrary) */
class="text-[#3377bb] bg-[#3377bb]"
/* SCSS */
$brand: #3377bb;
/* SwiftUI */
Color(red: 0.200, green: 0.467, blue: 0.733)
/* Android */
Color.parseColor("#3377bb")Accessibility — WCAG contrast
Aa
#3377bb on white: 4.67:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#3377bb on black: 4.50:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red20.0%
Green46.7%
Blue73.3%
CMYK percentages
Cyan72.7%
Magenta36.4%
Yellow0.0%
Key (black)26.7%
Color previews
#3377bb text on a black background
contrast 4.50:1
Card sample
#3377bb text on a white background
contrast 4.67:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3377bb;
Background color
Panel with #3377bb background
background-color: #3377bb;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3377bb;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(51, 119, 187, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(51, 119, 187, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3377bb; background: linear-gradient(135deg, #3377bb, #4A33BB);