#3399cc
a balanced, vivid blue · cool · closest name: steelblue
RGB
51, 153, 204
HSL
200°, 60%, 50%
CMYK
75, 25, 0, 20
Luminance
0.2785
Every format
| HEX | #3399cc |
| RGB | rgb(51, 153, 204) |
| HSL | hsl(200, 60%, 50%) |
| CMYK | cmyk(75%, 25%, 0%, 20%) |
| LAB | lab(59.8 -12.0 -34.5) |
| LCH | lch(59.8 36.5 250.8) |
| OKLCH | oklch(0.647 0.119 235.0) |
Copy-ready code
/* CSS */
color: #3399cc;
background-color: #3399cc;
/* Tailwind (arbitrary) */
class="text-[#3399cc] bg-[#3399cc]"
/* SCSS */
$brand: #3399cc;
/* SwiftUI */
Color(red: 0.200, green: 0.600, blue: 0.800)
/* Android */
Color.parseColor("#3399cc")Accessibility — WCAG contrast
Aa
#3399cc on white: 3.20:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#3399cc on black: 6.57:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red20.0%
Green60.0%
Blue80.0%
CMYK percentages
Cyan75.0%
Magenta25.0%
Yellow0.0%
Key (black)20.0%
Color previews
#3399cc text on a black background
contrast 6.57:1
Card sample
#3399cc text on a white background
contrast 3.20:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3399cc;
Background color
Panel with #3399cc background
background-color: #3399cc;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3399cc;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(51, 153, 204, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(51, 153, 204, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3399cc; background: linear-gradient(135deg, #3399cc, #3333CC);