#3355dd
a balanced, vivid blue · warm · closest name: royalblue
RGB
51, 85, 221
HSL
228°, 71%, 53%
CMYK
77, 62, 0, 13
Luminance
0.1242
Every format
| HEX | #3355dd |
| RGB | rgb(51, 85, 221) |
| HSL | hsl(228, 71%, 53%) |
| CMYK | cmyk(77%, 62%, 0%, 13%) |
| LAB | lab(41.9 35.9 -72.7) |
| LCH | lch(41.9 81.1 296.2) |
| OKLCH | oklch(0.513 0.210 267.4) |
Copy-ready code
/* CSS */
color: #3355dd;
background-color: #3355dd;
/* Tailwind (arbitrary) */
class="text-[#3355dd] bg-[#3355dd]"
/* SCSS */
$brand: #3355dd;
/* SwiftUI */
Color(red: 0.200, green: 0.333, blue: 0.867)
/* Android */
Color.parseColor("#3355dd")Accessibility — WCAG contrast
Aa
#3355dd on white: 6.03:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#3355dd on black: 3.48:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red20.0%
Green33.3%
Blue86.7%
CMYK percentages
Cyan76.9%
Magenta61.5%
Yellow0.0%
Key (black)13.3%
Color previews
#3355dd text on a black background
contrast 3.48:1
Card sample
#3355dd text on a white background
contrast 6.03:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3355dd;
Background color
Panel with #3355dd background
background-color: #3355dd;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3355dd;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(51, 85, 221, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(51, 85, 221, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3355dd; background: linear-gradient(135deg, #3355dd, #8233DD);