#3366aa
a dark, vivid blue · cool · closest name: steelblue
RGB
51, 102, 170
HSL
214°, 54%, 43%
CMYK
70, 40, 0, 33
Luminance
0.1311
Every format
| HEX | #3366aa |
| RGB | rgb(51, 102, 170) |
| HSL | hsl(214, 54%, 43%) |
| CMYK | cmyk(70%, 40%, 0%, 33%) |
| LAB | lab(42.9 6.0 -41.5) |
| LCH | lch(42.9 41.9 278.3) |
| OKLCH | oklch(0.509 0.122 256.4) |
Copy-ready code
/* CSS */
color: #3366aa;
background-color: #3366aa;
/* Tailwind (arbitrary) */
class="text-[#3366aa] bg-[#3366aa]"
/* SCSS */
$brand: #3366aa;
/* SwiftUI */
Color(red: 0.200, green: 0.400, blue: 0.667)
/* Android */
Color.parseColor("#3366aa")Accessibility — WCAG contrast
Aa
#3366aa on white: 5.80:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#3366aa on black: 3.62:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red20.0%
Green40.0%
Blue66.7%
CMYK percentages
Cyan70.0%
Magenta40.0%
Yellow0.0%
Key (black)33.3%
Color previews
#3366aa text on a black background
contrast 3.62:1
Card sample
#3366aa text on a white background
contrast 5.80:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3366aa;
Background color
Panel with #3366aa background
background-color: #3366aa;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3366aa;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(51, 102, 170, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(51, 102, 170, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3366aa; background: linear-gradient(135deg, #3366aa, #4F33AA);