#337dbb
a balanced, vivid blue · cool · closest name: steelblue
RGB
51, 125, 187
HSL
207°, 57%, 47%
CMYK
73, 33, 0, 27
Luminance
0.1896
Every format
| HEX | #337dbb |
| RGB | rgb(51, 125, 187) |
| HSL | hsl(207, 57%, 47%) |
| CMYK | cmyk(73%, 33%, 0%, 27%) |
| LAB | lab(50.6 -1.9 -39.1) |
| LCH | lch(50.6 39.2 267.2) |
| OKLCH | oklch(0.573 0.120 247.3) |
Copy-ready code
/* CSS */
color: #337dbb;
background-color: #337dbb;
/* Tailwind (arbitrary) */
class="text-[#337dbb] bg-[#337dbb]"
/* SCSS */
$brand: #337dbb;
/* SwiftUI */
Color(red: 0.200, green: 0.490, blue: 0.733)
/* Android */
Color.parseColor("#337dbb")Accessibility — WCAG contrast
Aa
#337dbb on white: 4.38:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#337dbb on black: 4.79:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red20.0%
Green49.0%
Blue73.3%
CMYK percentages
Cyan72.7%
Magenta33.2%
Yellow0.0%
Key (black)26.7%
Color previews
#337dbb text on a black background
contrast 4.79:1
Card sample
#337dbb text on a white background
contrast 4.38:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #337dbb;
Background color
Panel with #337dbb background
background-color: #337dbb;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #337dbb;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(51, 125, 187, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(51, 125, 187, 0.45);
Border & gradient
Gradient panel
border: 3px solid #337dbb; background: linear-gradient(135deg, #337dbb, #4433BB);