#51ade4
a balanced, vivid blue · cool · closest name: steelblue
RGB
81, 173, 228
HSL
202°, 73%, 61%
CMYK
65, 24, 0, 11
Luminance
0.3724
Every format
| HEX | #51ade4 |
| RGB | rgb(81, 173, 228) |
| HSL | hsl(202, 73%, 61%) |
| CMYK | cmyk(65%, 24%, 0%, 11%) |
| LAB | lab(67.5 -10.7 -35.7) |
| LCH | lch(67.5 37.3 253.4) |
| OKLCH | oklch(0.715 0.118 237.9) |
Copy-ready code
/* CSS */
color: #51ade4;
background-color: #51ade4;
/* Tailwind (arbitrary) */
class="text-[#51ade4] bg-[#51ade4]"
/* SCSS */
$brand: #51ade4;
/* SwiftUI */
Color(red: 0.318, green: 0.678, blue: 0.894)
/* Android */
Color.parseColor("#51ade4")Accessibility — WCAG contrast
Aa
#51ade4 on white: 2.49:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#51ade4 on black: 8.45:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red31.8%
Green67.8%
Blue89.4%
CMYK percentages
Cyan64.5%
Magenta24.1%
Yellow0.0%
Key (black)10.6%
Color previews
#51ade4 text on a black background
contrast 8.45:1
Card sample
#51ade4 text on a white background
contrast 2.49:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #51ade4;
Background color
Panel with #51ade4 background
background-color: #51ade4;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #51ade4;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(81, 173, 228, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(81, 173, 228, 0.45);
Border & gradient
Gradient panel
border: 3px solid #51ade4; background: linear-gradient(135deg, #51ade4, #5751E4);